【LayLax】Tokyo Marui M4A1 MWS Heavyweight Buffer Spring Guide (New Release April 20, 2026)

●Approx. 8.8 times heavier than stock! Super heavyweight at 211g!!
●Super hard recoil shock!!
●Precision machined from steel!

The buffer spring guide is a part that smooths the movement of the buffer spring when the bolt carrier retracts. While the stock part is made of lightweight resin to avoid hindering blowback movement, this product uses steel, which has a higher specific gravity, resulting in a super heavyweight of approximately 8.8 times that of the stock part (211g). This generates a significantly harder recoil shock compared to the stock condition. It's a custom part that can further enhance the enjoyment of the M4A1 MWS as a gas blowback rifle.
*LayLax has conducted a 10,000-shot endurance test and confirmed that there are no issues with the durability of the main unit or this product. However, the recoil impact may cause components to wear out faster than usual. Please be aware of this beforehand.

■Compatible Models: Tokyo Marui Gas Blowback Machine Guns
・M4A1 MWS
・CQBR Block 1
・M4A1 Carbine
・Mk18 Mod 1
・URG-I 11.5inch SOPMOD Block 3
・MTR16
・MTR16 G-Edition