Norsso N320 Sub-Compact BBK Compensator, 9mm - BLACKOur BBK comp is now available for P320 Sub compact applications! Works with all 3 grip sizes! Norsso BBK Compensator Features: Machined from solid 7075 Aluminum billet in our Las Vegas, NV facility Two compensator ports for vertical and angular gas control Tapered bob cut to seamlessly integrate with full size length frames. See pictures for fitment on all 3 frame sizes with sub compact setup. Compatible for 9mm applications Attaches to 1 2 28 Right