FAB Defense GLSHOCKCP Recoil-Reducing M4/M16 Buttstock w/Cheek Rest Black FX-GLSHOCKCP. These AR15 Stocks crafted by FAB Defense are incredibly versatile fitting both MIL-SPEC and commercial aftermarket tubes. The FAB Defense GL-SHOCK CP Shock-Absorbing Buttstock has no protruding parts so that it won't get caught on your gear while mobile in the field. Additionally the inversed positioning lever can be quickly activated while QD swing swivel connectors allow for sling attachment so that you can customize the way you carry your rifle. Use the adjustable cheek rest to find the most comfortable shooting stance while you perfectly peg targets from plenty of yards out. Grab your FAB Defense M4/AR15 Shock-Absorbing Buttstock today to enhance your shooting experience and see what your rifle is truly capable of in the field. Specifications for FAB Defense GLSHOCKCP Recoil-Reducing M4/M16 Buttstock: Manufacturer: FAB Defense Gun Model: M4 AR-15 Gun Type: Rifle Weight: 0.597 lb 271 g Length: 180 mm 7.09 in Additional Features: Compatible with Buffer tubes in Commercial or Mil-Spec diameters Condition: New Height: 131 mm 5.16 in Width: 2.05 in 52 mm Features of FAB Defense GLSHOCKCP Recoil-Reducing M4/M16 Buttstock: Unique Patented "Anti-Rattle" Mechanism Sleek New Design with No Protruding PartsWill Not Get Caught on Gear and Webbing Unique New Slick and Quick Operated Inversed Positioning Lever Integral Ribbed Rubber Butt Pad with a Non Slip Design Integrated Quick Detach "QD" Sling Swivel Connectors on Both Sides Watertight Battery Storage for Two CR123A 3V Lithium Batteries / AA 1.5v Fits Perfectly on Both Tubes - MIL-SPEC and Commercial Aftermarket Made from Mill-Spec Reinforced Composite Polymer With an Adjustable Cheek Rest Package Contents: FAB Defense GLSHOCKCP Recoil-Reducing M4/M16 Buttstock 1S0-BSC-GLSHOCKCP What firearm models does the manufacturer say FAB Defense GLSHOCKCP Recoil-Reducing M4/M16 Buttstock is compatible with? The manufacturer says that FAB Defense GLSHOCKCP Recoil-Reducing M4/M16 Buttstock is compatible with AR-15 M4FAB Defense FX-GLSHOCKCP: GLSHOCKCP Recoil-Reducing M4/M16 Buttstock w/Cheek Rest Black