Categories All About Guns Integrally suppressed M3A1 Grease Gun Submachine Gun Post author By Grumpy Post date December 2, 2021 No Comments on Integrally suppressed M3A1 Grease Gun Submachine Gun ← More Recoil Than 500 Magnum ??? (S&W 329PD) → The .44 Special: A Big-Bore Favorite by DAVE CAMPBELL Leave a Reply Cancel replyYour email address will not be published.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