ANGRY GUN Reinforced Steel Buffer Spring for Tokyo Marui GBB M4 Series (130% Recoil Spring)

Compatible Airsoft Guns: ■Tokyo Marui Gas Blowback Machine Gun M4 Series (Mark 18 Mod 1, MTR16 G Edition, MTR16, M4A1 Carbine, CQBR Block 1, M4A1 MWS, etc.) Installation Ease: ★☆☆☆☆ Fully compatible with the Tokyo Marui genuine buffer spring. Simply take down the M4 and replace it for easy installation. If the "beep" sound of the spring when firing is a concern, it can be reduced by applying a thick grease or by inserting urethane into the bottom of the tube. This is a hardened steel buffer spring manufactured by ANGRY GUN, a high-quality airsoft parts manufacturer. Compatible with the Tokyo Marui Gas Blowback Machine Gun M4 Series. It features a "percentage display" that allows you to select the strength compared to the genuine buffer spring. The 110% is an excellent match for the Tokyo Marui genuine recoil buffer and high-speed lightweight recoil buffers.