Categories All About Guns General Dynamics US Army Prototype M4 replacement NGSW 6.8mm Post author By Grumpy Post date May 10, 2022 No Comments on General Dynamics US Army Prototype M4 replacement NGSW 6.8mm ← Sig Sauer p229 357 sig → This Pistol Shoots Buckshot: Lots of It! Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Comment * Name * Email * Website Save my name, email, and website in this browser for the next time I comment. Δ