A donor mag is required for feed lips (see product images for image of correct feed lip generation), exhaust valve and gas route. A pre installed CNC valve collar ensures lifelong air seal. You must glue the feed lip pins in place
350fps@105psi. Due to sacrificing volume for a low profile design, this adapter may only cycle a few rounds on full auto (some regs will fair better than others, and many state full auto works fine!).
BB retention mechanism to reduce BB loss during magazine changes
US Style Fitting as standard (can be swapped to an EU 6mm push fit disconnect,