Categories All About Guns Testing GYROJET Rocket Guns – Why were they a commercial failure? Post author By Grumpy Post date July 30, 2018 No Comments on Testing GYROJET Rocket Guns – Why were they a commercial failure? ← Poor Old England or Who in their right mind would want to be a Cop over there! → SIG Stgw 57 Leave a Reply Cancel replyYour email address will not be published.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