Cross Armory Big Bolt Catch AR-15s .308s Steel Black Small. Built from a one-piece design these AR15 Parts developed by Cross Armory are easy to install and offer maximum control from your ready position. Working universally across all AR-15s .308s and polymer and billet lower receivers the Cross Armory BBC Universal Bolt Catch significantly improves the speed and efficiency of reloads. Fitting both right and left-handed shooters with their preference of reload speed this all-encompassing accessory makes your shooting experience more efficient. Making your shooting experience better isn't a difficult task when you have the Cross Armory Big Bolt Catch. Specifications for Cross Armory Big Bolt Catches: Manufacturer: Cross Armory Gun Model: AR-15 Fabric/Material: Steel Caliber: .308 Winchester Color: Black Finish: Black Length: 2.25 mm Projectile Caliber: .308 Caliber Features of Cross Armory Big Bolt Catches Extended AMBIDEXTROUS bolt catch designed specifically to work with SAFE MAG 2 and SAFE MAG .308 Maximum control from ready position Fast easy installation One piece design for strength and reliability Universal fit for AR-15s .308s polymer and billet lowers 4140 Ordnance Steel with Type III Hard Coat RELOAD EASIER without awkward hand change overs Significantly improves speed and efficiency of reloads Package Contents: Cross Armory Big Bolt Catches What firearm models does the manufacturer say Cross Armory Big Bolt Catches is compatible with? The manufacturer says that Cross Armory Big Bolt Catches is compatible with AR-15Cross Armory crBBC: Big Bolt Catch AR-15s .308s Steel Black Small