If ZERO stars was an option ~ I'd give it a ZERO stars. This does NOT fit the typical 9mm suppressor. Submitted a Return Request ~ in less than 2 minutes Customer Service responded & pointed out the fine-print DESCRIPTION states ~ Designed for the B&T APR338 bolt but will fit other, similarly sized bolts or suppressors HKP Terms & Conditions ~ Buyers pays return-shipping & subject to 20% re-stocking fee BUYER BEWARE
