Matrix Steel Bolt Stop for WA / KA / G&P WOC & Comp. Airsoft GBB Gas Blowback Rifles

"The original bolt stop that comes with the G&P Challenge kits is made of a very soft pot metal and rapidly deformed. After putting 10 magazines through my rifle, the face of the original bolt catch where it meets the carrier group was worn down to the point where the bolt would not lock to the rear.

This steel replacement works very well, and I have had no difficulties after firing 2,500 rounds through the rifle. When you first put this replacement part in the rifle, make sure to lightly polish the top face that meets the BCG as it will take a little time to break it in and achieve smooth operation.