This Maple Leaf hardened 75 degree bucking performs much better with higher velocity gas blowback setups, especially those that have been upgraded with high-power bolt assemblies or use higher pressure red or black gas.

Specifications:

• 75 Degree Hardened Rubber Bucking
• Fits Gas Blowback KRISS Vectors, KWA LM4 GBBRs, KSC M4A1, and HK45 Gas Blowback pistols