Luth-AR Paddle Over Size Bolt Catch Black. The large paddle facilitates positive bolt release and locking. Perfect for use in competition where high-speed manipulation counts as well as hunting law enforcement and military use when wearing gloves in tactical or cold weather situations. Specifications for Luth-AR The Paddle Oversize Catch: Manufacturer: Luth-AR Gun Model: AR-15 Fabric/Material: 8620 Steel heat treated to 15N-89-91 Caliber: .223 Remington Color: Black Finish: Magnesium Phosphate Gun Make: AR Platform Gun Type: Rifle Weight: 0.04 lb Features of Luth-AR The Paddle Oversize Catch Oval shaped paddle Bolt release allows for fast contact to engage and retract the bolt carrier High-speed manipulation Textured for a non-slip grip with good looks Package Contents: Luth-AR The Paddle Oversize Catch What firearm models does the manufacturer say Luth-AR The Paddle Oversize Catch is compatible with? The manufacturer says that Luth-AR The Paddle Oversize Catch is compatible with AR-15Luth-AR LR-11L: Paddle Over Size Bolt Catch Black