G&P MWS Stainless Steel Bolt Stop Upgrade Kit for Tokyo Marui M4A1 MWS GBBR [Code: MWS021C]
Retail Price: 69.99
The G&P MWS stainless steel bolt stop kit is an upgrade over an aluminum kit or other zinc alloy kits as the steel provides much higher levels of durability and robustness. While being stronger it doesn't add unnecessary weight.