This replacement top cocking upper is ready to be dropped into your Master Piece Arms 9mm mid sized M-11. The upper comes with a threaded barrel, and has the standard front sight on it as well. Bolt, bolt handle and other parts sold separately. Also fits M-11 SMG and Semi Auto 9mm guns.

This wire retainer is a necessary replacement part to hold the firing components in place. It should be replaced if bent or worn out. Fits Cobray and MPA semi Auto guns. Semi Auto retainer wire is shorter than wire for SMG.

This semi auto hammer is a replacement for your worn out or damaged factory hammer. Fits semi auto M-11 MPA30, 35 & 930 series guns only.

High Rise bolt handle for the M-11 9mm Semi Auto Master Piece Arms guns. Replaces a lost or damaged bolt handle and it is notched to lock in place and can easily be turned for free movement. (gun and other components sold separately)

If your gun model requires a two piece receiver pin or you want one that offers a solid lock then this is for you. It has a larger head on each end and locks in place after the smaller end is snapped all the way through to lock the receiver in place. Fits all Master Piece Arms 9mm guns, & mid sized MPA. **Does not fit MPA Mini 930. (gun & other parts sold separately)

This is a factory MPA bolt assembly for the Mini 930 9mm semi auto pistol. It comes complete and ready to drop into you upper receiver.

This two piece pin set is a bit different from our other receiver pins. It has a small detent inside the larger pin where the ball bearing on the smaller pin locks into place. It offers a solid lock and will secure the upper and lower during even the harshest mag dumps. Fits all Master Piece Arms 9mm, mid size and Mini 930.

This MPA replacement Sear Plate is a perfect replacement for a damaged or worn out plate. Cast steel finished in black oxide. Fits 30 & 35 series only, does NOT fit mini 930.

This is a factory replacement 9mm barrel for your MPA 9mm, 30 & 35 series. After thousands of rounds and your weapon's accuracy is a bit off, it may be time to replace your barrel. This easy installation with the use of one of our McWrenches and a new barrel spring pin will give you the performance you can expect from your SMG. Barrel thread is 3/4x10.

This complete bolt assembly is ready to go and a perfect replacement for a worn out bolt. Complete with ejector, ejector rod, recoil rod, recoil spring, and buffer. Fits M-11 Semi Auto and MPA 30 & 35 series semi auto guns.

This barrel spring pin is a necessary replacement if you remove your barrel from an MPA 30, 35 & 930 series as well as the Cobray M-11 SA. Once you tap the pin out with a center punch, awl or other tool, you may mushroom or damage the pin. This pin is the factory replacement pin to keep your barrel tightly in place.

This semi auto hammer and springs is a replacement for your worn out or damaged factory hammer and springs. Fits semi auto M-11 MPA30 & 930 series guns only.