Slide Fire™ AR-15 Stock : Cabela's What's a bump stop? It's described here: Slide Fire™ AR-15 Stock Increases your rifle’s rate of fire Safe, legal and fun Works on most AR-15s Right- and left-hand stocks available Maximize your fun with this safe and innovative AR-15 stock, which uses bump-fire technology to shoot as quickly as desired. The rugged, weatherproof stock is made of high-strength, reinforced polymer, delivering a lifetime of rapid-firing fun. Designed for use on AR-15s that are equipped with carbine-style buffer assemblies and mil-spec or commercial buffer tubes. This stock is approved by the BATFE and does not require any special permits to use. Quick, easy installation with no permanent modifications necessary. Includes stock mounting hardware, interface block/nut retainer, hex key and instructions. Made in USA. Available: Right hand, Left hand. SAFE, LEGAL AND OH, SO FUN! All The Crazy, Legal Ways To Have 'Full-Auto' Fun On The Gun Range Assault Weapons Ban summary - United States Senator for California That darn Dianne Feinstein tried to ban the Bump Stop. What a b**ch. It's way harder to kill groups of people without an automatic weapon. What else would you use an automatic weapon for? Should there be a debate on Automatic weapons? Won't that infringe on my gun rights? AND I want a bazooka. Why can't that be legal? Mario Draghi is preparing the market for the European QE bazooka If they can have one in Europe, we should be able to have one here!