DFCO Kung Fu Grip Black & DFCO Kung Fu Grip Plug. It Improves Comfort When Installed On Firearms With A Shorter Length Of Pull But Feels Right At Home On Standard Lop Platforms As Well. Specifications for DFCO Kung Fu Grip Black: Manufacturer: DFCO Gun Make: AR Platform Material: Nylon Condition: New Fabric/Material: Rubber Package Contents: DFCO Kung Fu Grip Black What firearm models does the manufacturer say DFCO Kung Fu Grip Black is compatible with? The manufacturer says that DFCO Kung Fu Grip Black is compatible with AR-15 M4 M16 AR-10 SR-25 SIG Sauer MPX SIG Sauer MCX Knight's Armament M110DFCO DFCO KFG-BLK-KIT2: DFCO Kung Fu Grip Black & DFCO Kung Fu Grip Plug