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Vietnam’s Forgotten Gunship: The ACH-47A Chinook By Friedrich Seiltgen

In 1964, the U.S. Army sought an armed helicopter for use in Vietnam. The Boeing-Vertol company proposed a heavily armed CH-47 Chinook helicopter, which the U.S. Army quickly accepted. The original agreement called for 11 gunships, but only four were built, as the Chinook was needed for transport duties.

In late 1965, Boeing-Vertol completed four CH-47A Chinook Gunships. The prototype, #64-13145 (Co$t of Living), went to Edwards Air Force Base for flight testing. The other three ships, 64-13149 (Easy Money), 64-13151 (Stump Jumper), and 64-13154 (Birth Control), were assigned to the 10th Aviation Group, Field Evaluation Detachment (Special)(CH-47) (Provisional) at Fort Benning, Georgia.

The ACH-47A Chinook gunship was a heavily armed variant of the standard CH-47, designed for combat in Vietnam. It carried cannons, rocket launchers and multiple machine guns. Image: U.S. Army
The ACH-47A Chinook gunship was a heavily armed variant of the standard CH-47, designed for combat in Vietnam. It carried cannons, rocket launchers and multiple machine guns. Image: U.S. Army

On January 18, 1966, Lt. Col. William Tedesco took command of the Detachment, and the unit conducted training at Ft. Benning, Redstone Arsenal, and Eglin AFB.

Legend has it that its commander, Lt. Col. Tedesco created the detachment nickname. According to a crew member, one day after testing was done they were eating at a club featuring go-go dancers when Tedesco told them he would pay $25 to the first man to come up with a name for the gunships. One of the crew suggested “Go-Go Girls.” Tedesco thought about it momentarily and said, “We should call them “Guns-A-Go-Go.”

CH-47A Chinook Gunships Dispatched to Vietnam

On April 19th, the unit was redesignated the 53rd Aviation Detachment Field Evaluation (Provisional), nicknamed Guns-A-Go-Go, and ordered to Vietnam for temporary duty at Vung Tau Air Base for three months and An Khe, aka Camp Radcliff, aka The Golf Course, for three months.

Vung Tau Air Base was a Republic of Vietnam Air Force (RVNAF) facility located near the city of Vũng Tàu in southern Vietnam. The base was initially constructed in 1940 and known as Cap St Jacques Airfield.

Following the partition of Vietnam in 1954, the French Air Force conducted Grumman F8F Bearcat transition training for the RVNAF at the airfield before leaving for good. In 1961, the U.S. Army began upgrading the base for U.S. forces and the main base for Royal Australian Army and Air Force units serving in Vietnam.

A soldier inspects the armor plating installed on the ACH-47A gunship. These plates were designed to protect vital components and crew positions from enemy fire. Image: U.S. Army
A soldier inspects the armor plating installed on the ACH-47A gunship. These plates were designed to protect vital components and crew positions from enemy fire. Image: U.S. Army

Camp Radcliff was established in late August 1965 by the 70th Engineer Battalion as the base camp for the 1st Cavalry Division. The camp was named after 1/9 Cavalry Maj. Donald Radcliff, the 1st Cavalry’s first combat death, who was killed in August 1965 during Operation Starlite.

To reduce the rotor-blown dust on the landing zone, the advance party was ordered to cut back foliage to ground level by hand, giving the base its nickname of the “Golf Course.” Camp Radcliff was the largest helicopter base in the world at the time, capable of accommodating the division’s 400 helicopters.

ACH-47A Armament

The gunship’s armament was extensive. On the nose was an M5 40mm automatic grenade launcher. The M5 consists of a single M75 grenade launcher mounted in a nose turret, with a hand-controlled sight linked to the turret. It had an ammunition capacity of 150 or 302 rounds, depending on the configuration.

Weapons sponsons were mounted on either side of the ship, each fitted with an M24A1 20mm Hispano-Suiza HS.404 gas-operated autocannon and an XM159 19 tube 2.75-inch folding-fin aerial rocket launcher or an M18 gun pod containing an M134 Minigun with a cyclic rate of 2,000 or 4,000 rounds per minute fed from a 1,500-round drum.

On the ACH-47A’s right pylon, the standard rocket launcher has been replaced with an M18E1 gun pod. Inside is the M134 Minigun, a 7.62mm six-barrel rotary machine gun. Image: U.S. Army
On the ACH-47A’s right pylon, the standard rocket launcher has been replaced with an M18E1 gun pod. Inside is the M134 Minigun, a 7.62mm six-barrel rotary machine gun. Image: U.S. Army

The ACH-47A carried five 7.62×51mm M60D machine guns or .50-caliber M2HB “Ma Deuce” heavy machine guns, two on each side and one mounted on the rear loading ramp. The gunship carried over two tons of expendable munitions to feed all that firepower.

To improve its survivability, Boeing fitted the gunship with armor plating near the front to protect components, and it added plating into the newly designed crew seats, which wrapped around the torso of the pilot and co-pilot.

Stump Jumper

On July 4th, 1966, gunship #64-13151 lost its #2 engine on a gun run and was forced to land in an open field filled with tree stumps. The Chinook suffered significant damage to the underbelly. This forced landing earned it the nickname “Stump Jumper.”

A month later, Stump Jumper was involved in a ground taxi accident with another Chinook at Vung Tau Airfield, and the gunship was destroyed, literally breaking in two. With the destruction of the Stump Jumper, the testing of #64-13145, Co$t of Living at Edwards AFB was stopped, and it was shipped off to Vietnam.

Co$t of Living

On May 5, 1967, Co$t of Living suffered a tragic system failure. While making a gun run in the vicinity of Bong Son, the retaining pins on one of its 20mm cannons came loose, allowing the gun to swing upwards and fire into the aircraft’s front rotor, destroying the front rotor blades and causing the aircraft to spin to the ground and crash. All eight crew members would perish.

Birth Control

On February 22nd, 1968, Birth Control was in the battle to recapture Hue during the Tet Offensive. While pulling out of a gun run, birth Control came under heavy fire, which caused loss of aft transmission pressure and made an emergency landing in a rice paddy about 600 meters NW of the Citadel walls of the ancient city.

The ACH-47A’s rear-mounted gun was typically an M60D or .50 caliber M2 machine gun. It gave the helicopter all-around defensive coverage in the field. Image: U.S. Army
The ACH-47A’s rear-mounted gun was typically an M60D or .50 caliber M2 machine gun. It gave the helicopter all-around defensive coverage in the field. Image: U.S. Army

The crew removed the guns from the ship and took a defensive position. Easy Money came to the rescue and positioned herself between the ship and incoming enemy fire. The crew of Birth Control boarded Easy Money and, while attempting to get airborne with the extra weight, started taking hits, which wounded some of the crew.

Easy Money made its way back to nearby Camp Evans. As plans were being made to recover Birth Control, Intelligence reported that NVA mortar crews had destroyed the ship.

Easy Money

With only one gunship remaining and the need for heavy-lift helicopters for the war, the U.S. Army canceled the program. Easy Money finished out the war at Vung Tau as a Chinook maintenance trainer with the Boeing field unit.

The restored ACH-47A “Easy Money” is displayed at Fort Rucker. Image: Program Executive Office for Army Aviation/U.S. Army
The restored ACH-47A “Easy Money” is displayed at Fort Rucker. Image: Program Executive Office for Army Aviation/U.S. Army

Of the four original gunships, Easy Money was the lone survivor. After the Vietnam War, Easy Money eventually ended up at Fort Eustis, Virginia, where it served as a trainer for the Transportation School Sheet Metal Course. In the late 1990s, it was recognized for its historical significance and rebuilt for a museum display at the Fort.

In May 2000, Easy Money was permanently displayed at the United States Army Aviation and Missile Command/CH-47 Program Executive Office, Redstone Arsenal, Alabama.

Program Successes

Ultimately, the Guns-a-Go-Go program was a success. The troops loved the gunship’s support, and the enemy feared it. During their evaluation period, the gunships destroyed every target they engaged.

An Australian soldier inspects the ACH-47A “Birth Control” on the ground in Vietnam. Birth Control was one of only four ACH-47A “Guns-A-Go-Go” helicopters built. Image: AWM
An Australian soldier inspects the ACH-47A “Birth Control” on the ground in Vietnam. Birth Control was one of only four ACH-47A “Guns-A-Go-Go” helicopters built. Image: AWM

In the words of the Guns-A-Go-Go Commander in Vietnam, Maj. Gen. Tolson:

“Though anything but graceful, it had a tremendous effect on the friendly troops, which constantly asked for its support. From an infantryman’s viewpoint, when the Go-Go Bird came, the enemy disappeared.”

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Wheelgun Wednesday: NEW Colt Cobra 4” Stainless & Blued Anacondas by Adam Scepaniak

The new wheelgun announcements don’t stop from Colt lately, and all of us here in attendance at Wheelgun Wednesday are happier for it! Their latest announcements are new blued Anaconda offerings of 4.25”, 6”, and 8” barrel lengths as well as a new Cobra 4” Stainless in .38 Special +P.

 

Wheelgun Wednesday @ TFB:

 

Colt Cobra 4” Stainless .38 Special +P (SKU: COBRA-SB4BB)

For starters, we’ll take a look at the lone, new Cobra variant with the 4” Stainless .38 Special +P ( SKU: COBRA-SB4BB). This 6-shooter dons a Hogue Grip while being paired with a classic brass bead front sight and a trench rear. At an MSRP of $1,099 it is a touch more expensive than all of the other Cobra offerings currently out on the market, but not so much so that it is venturing into Python and Anaconda territory.

 

Key Features:

  •  Built with a 4″ forged stainless steel frame and one-piece barrel featuring a recessed target crown for improved accuracy and extended durability.
  • Target-Focused Sight System: Equipped with a brass bead front sight and integral notch rear sight for fast, reliable sight acquisition and alignment.
  • Reliable 6-Round Capacity: Includes a fluted 6-round cylinder, supporting both double and single-action operation for versatile shooting control.
  • Enhanced Ergonomics: Outfitted with black Hogue® OverMolded Rubber Grips to provide a secure, comfortable hold under recoil and extended use.

 

Technical Specs

  • Unloaded Weight: 30 oz
  • Capacity: 6 Rounds
  • Frame: Stainless Steel with Polished Finish
  • Barrel: 4” Barrel with 1 in 14” Left-Hand, 6-Groove Rifling
  • Overall Length: 8.75″
  • Overall Height: 4.75″
  • Overall Width: 1.4″
  • Sights: Brass Bead Front with Integral Notch Rear
  • Action Type: Double-Action (DA) and Single-Action (SA)
  • Trigger Pull: 7 – 10 Lb (DA) | 3 – 4 Lb (SA)
  • Grip: Hogue® OverMolded Rubber Grips
  • Model: COBRA-SB4BB

Blued Colt Anacondas

All of the new blued Anacondas being announced have 3 prominent characteristics that Colt is hoping will win over wheelgun lovers enough for you to want to add one – or three – to your collection. Those attributes are listed below and all of the blued Anacondas that are to follow have the same MSRP of $1,699 each.

Key Features for All Blued Anacondas:

  • Reimagined Finish: Crafted in carbon steel with a sleek, traditional blued finish for a refined, classic appearance.
  • Functional Design: Features a forged carbon steel frame with a polished finish and a matte top rib to reduce glare and enhance sight acquisition.
  • Enhanced Trigger System: Refined leaf-spring action delivers a nonstacking, smooth-as-glass trigger pull for improved control and accuracy.
Colt Anaconda 4.25″ Blued .44 Rem Mag

First up, we have the shortest barrel of this new collection in a traditional 4.25” barrel offering. This classically blued revolver could pull double-duty as a hunting sidearm as well as an enjoyable target pistol. All of its defining traits are listed below as presented by Colt.

Technical Specs

  • Unloaded Weight: 42 oz
  • Capacity: 6 Rounds
  • Frame: Carbon Steel with Blued Polished Finish
  • Barrel: 4.25” Barrel with 1 in 20” Left-Hand, 6-Groove Rifling
  • Overall Length: 11.25″
  • Overall Height: 6″
  • Overall Width: 1.75″
  • Sights: Red Ramp Front and Fully Adjustable Rear
  • Action Type: Double-Action (DA) and Single-Action (SA)
  • Trigger Pull: 7 – 9.5 Lb
  • Grips: Target Walnut, Gold Medallion
  • Model: ANACONDA-BP4WTS

Colt Anaconda 6″ Blued .44 Rem Mag

Next, is the 6” blued Anaconda that isn’t vastly different from the last. Slightly longer barrel and slightly easier to shoot, but everything else remains the same as well as the $1,699 MSRP we discussed earlier.

Technical Specs

  • Unloaded Weight: 53 oz
  • Capacity: 6 Rounds
  • Frame: Carbon Steel with Blued Polished Finish
  • Barrel: 6” Barrel with 1 in 20” Left-Hand, 6-Groove Rifling
  • Overall Length: 13″
  • Overall Height: 6″
  • Overall Width: 1.75″
  • Sights: Red Ramp Front and Fully Adjustable Rear
  • Action Type: Double-Action (DA) and Single-Action (SA)
  • Trigger Pull: 7 – 9.5 Lb
  • Grips: Target Walnut, Gold Medallion
  • Model: ANACONDA-BP6WTS

Colt Anaconda 8″ Blued .44 Rem Mag

Whether you want to call it the “sword of 44 Mag justice” or the “long boi” or boringly the 8” blued Anaconda, this is our last stop for today. This longer barrelled, blued Anaconda should afford you the most accuracy for when you really want to reach out touch something.

Technical Specs

  • Unloaded Weight: 59 oz
  • Capacity: 6 Rounds
  • Frame: Carbon Steel with Blued Polished Finish
  • Barrel: 8” Barrel with 1 in 20” Left-Hand, 6-Groove Rifling
  • Overall Length: 15″
  • Overall Height: 6″
  • Overall Width: 1.75″
  • Sights: Red Ramp Front and Fully Adjustable Rear
  • Action Type: Double-Action (DA) and Single-Action (SA)
  • Trigger Pull: 7 – 9.5 Lb
  • Grips: Target Walnut, Gold Medallion
  • Model: ANACONDA-BP8WTS
Final Thoughts

At this time, Colt does not have any of the new blued Anacondas listed on their website – we assume that that will be coming soon – but they do have the Cobra 4” Stainless .38 Special +P listed that we discussed earlier. With Colt having announced a dozen plus new revolver offerings ahead of SHOT Show, it will be interesting to see if they actually announce anything new at the shot itself. Time will tell…

As always, let us know all of your thoughts about all of the new blued Anacondas as well as the new Cobra 4” Stainless .38 Special +P in the Comments below! We always appreciate your feedback.

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Ayoob: Dangerous 1911 Mistakes I’ve Seen By Massad Ayoob

We’ve all seen them, whether we’re at the range or in a gun shop. It’s just those kinds of things that you wish people understood were not a good idea. And when it comes to the topic of the 1911, I’ve got a list of them.

ejecting a cartridge into your hand is not completely safe
Ejecting a cartridge into your hand, as the author illustrates here, is not a sound move. What if you were to have an open-chamber detonation? Image: Gail Pepin

When Unloading

Some time early in the epoch of the 1911, folks figured out that they could unload by removing the magazine and then, with the palm of their free hand over the ejection port, rack the slide and eject the chambered cartridge into their hand.

In the early days of 1911’s with short ejectors, one could get away with that. Today, most autopistols have longer ejectors. If the slide sticks and the shooter pulls harder and achieves a sudden, sharp rearward movement, there is a chance the primer could be driven into that long ejector and cause an open-chamber detonation. This would not be good.

The brass casing is no longer surrounded by ordnance steel, but rather by the palm of your hand. If everything breaks wrong way, it turns into a miniature grenade that could drive brass shrapnel into the nerves of the palm of the hand. Just eject the darn thing to the floor or the ground. Open chamber detonations are rare, but they can happen. It’s not worth the risk.

There are still some schools that teach their students to unload that way … and there are some schools and police academies that forbid it. This writer is in the latter camp. Saying, “I’ve always done it this way and never had an accident” is like saying “I never wear a seatbelt and never had an auto accident.” The point is, the accident you haven’t had yet is the reason you wear the seatbelt just in case. Same in this regard.

Avoid the Press-Check

“Combat semantics” alert: a chamber check is when you retract the slide slightly to see whether or not there’s a round in the chamber, and a press-check is a specific technique subset of that procedure.

press check
Shown is a press check (not a chamber check). It requires putting a thumb inside the triggerguard and finger near the muzzle of a potentially loaded pistol. Image: Gail Pepin

Developed around the 1911 with John Moses Browning’s original design of a short recoil spring guide, the press check has the shooter hold the pistol’s frame normally in the gun hand with the finger clear of the trigger, and the support hand thumb hooks onto the inside of the triggerguard while the same hand’s index finger applies rearward pressure to the bottom front of the slide to bring the slide slightly back.

Let that sink in. Digit in triggerguard of probably loaded weapon. Thumb safety off so the slide of a 1911 or P-35 can move rearward. Firing grasp depressing grip safety. Finger in proximity to muzzle of possibly/probably loaded gun.

What could go wrong?

press check 2
A press check like this is dangerous for several reasons, including having your digits in very close proximity to the muzzle. Image: Gail Pepin

For anyone who came in late, what can go wrong is that a fat or gloved thumb can apply pressure inadvertently to a trigger (particularly a long trigger) inside the 1911’s relatively small triggerguard space. If the hand slips, the slide can come forward under spring pressure, possibly driving the muzzle down right onto that index finger. The slide coming forward pulls the gun and its trigger forward toward that thumb and…BANG.

Even if the finger stays under the muzzle, hot burning gases exiting the muzzle with thousands of pounds per square inch pressure — the muzzle blast we see at night — can take flesh off that finger down to the blackened bone.

Early in my career, I met a top shooter who had blown part of his left finger off doing a press check to confirm that there was a .45 round in the chamber of his 1911. Well, there was … .

conducting a chamber check
The author demonstrates a safer way of checking the chamber of a 1911 pistol. Image: Gail Pepin

That reminded me why John Browning put the grasping grooves at the rear of the slide, and that’s where I would very strongly suggest your support hand be when performing a chamber check. Working from the rear of the slide will also, unlike the press-check, have commonality of training and work with a 1911 (or any other auto pistol) with a full-length guide rod (FLGR) that prevents a press check. Indeed, one might consider the FLGR a safety feature in this respect.

Trigger Finger in Register…Where?

We all know to keep the finger out of the triggerguard unless and until we are in the very act of intentionally discharging the weapon. Perched on the front edge of the triggerguard is not safe: it holds the finger taut, and a startle response can snap it straight back into the trigger hard enough to cause an unintended discharge.

author demonstrates how to keep finger out of trigger guard
Author demonstrates how he holds his trigger finger in register with the 1911. He keeps his fingernail behind the slide stop stud. Image: Gail Pepin

With most pistols, straight along the frame is fine. However, the 1911 and many other pistols have a slide stop stud which protrudes from the right side and functions also as a takedown button. When it gets loose, every now and then a straight finger inadvertently pushes it leftward, and at the first shot the gun will lock up. The right-handed shooter can prevent that by indexing the fingernail of their trigger finger behind that stud, which will also let a long finger get on the trigger a little bit faster when the time comes to do so.

Muzzle Direction

New shooters and those with sub-optimal upper body strength may have trouble racking a slide. When they do, it’s human nature to pull the gun into their center, their abdomen, and align skeleton-muscular support by putting their arms in line with the barrel. This points the gun at anyone next to them (such as on a firing line), at their own forearm, and even at their own torso.

muzzle direction of pistol when manipulating the gun
This is a recipe for disaster. Always keep muzzle pointed safely downrange when racking an autopistol. Image: Gail Pepin

The gun must be pointed downrange or in some other safe direction while working the slide. Techniques for making slide-racking easier would constitute a whole article in and of themselves, and if you’d like such an article, let us know in the comments below.

A Slam Dunk

One of mine, learned from experience and debriefing multiple top gunsmiths, is slamming the slide closed on an empty chamber — particularly with 1911s. One of the world’s most famous 1911 experts is Bill Wilson, who did a whole video on why this shouldn’t be done, augmented with the same advice from handgun guru Ken Hackathorn. Shooting and 1911 expert Guy Joubert and national IDPA champion Austin Proulx have done a similar video with the same advice, as have I and others.

slamming slide on open chamber
Bad handling about to happen: the author’s thumb is going to depress slide stop lever to slam the slide closed on the empty chamber of Springfield 1911-A1 Range Officer .45. Image: Gail Pepin

On a 1911, the practice is ruinous to the sear, and on any semi-auto it’s tough on the extractor and the locking lugs. People who defend the practice say things like “Come on, the slide is rocketing back and forth when we shoot it, right?” Or, “That’s how they taught me to do it in the Navy.”

Let me answer those questions. First, during the actual firing cycle, the slide’s forward movement is slowed down and “cushioned” as the slide drives the topmost cartridge past the resistance of the feed lips. Second, as the cartridge moves forward, the extractor slides into the extractor groove between the case rim and the body of the casing, an element of controlled feed that in turn supports the extractor hook. That cushioning and support is absent when the slide slams forward on an empty pistol.

ease the slide forward on an empty chamber
When pistol is empty, close slide like this — hand riding the slide gently forward. Image: Gail Pepin

You do want to slam the slide closed when chambering a live round from the magazine, but that’s exactly what the gun was designed for; not slamming closed without a live round cushioning the mechanism.

Even worse is the amateur’s practice of locking the slide open, dropping a live cartridge into the chamber through the ejection port, and slamming the slide closed. Now the extractor is hitting the cartridge rim from the wrong direction, which can cause chipping of the extractor hook. It also forces a 1911’s internal extractor outward in a manner it was not designed for, and it won’t take too much of this abuse to cause the extractor to lose tension and start failing to do its job.

never drop slide on cartridge
Extreme no-no: the author explains why we should NEVER insert cartridge into chamber and then drop the slide. Image: Gail Pepin

Memorize a simple rule — slam it loaded (to guarantee the cartridge goes fully into battery) but ease it empty. And when loading the chamber, rack a round in from the magazine, on-safe your 1911 and holster it, and then remove the magazine, top it off with one more cartridge, and re-insert it into the holstered pistol.

Conclusion

We all love guns, and we want people to handle them safely and efficiently. We also don’t want anyone to look like a bozo — which they will to any gun-savvy person who sees them do any of these things I’ve covered. So, play it safe, treat those guns safely and with respect, and get out to the range and have some fun.

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