This patented Choke Cap technology makes the JK 195 series of 12 gauge suppressors the first and only shotgun suppressors on the market that correctly and variably shape your shot pattern to suit your use! They're the only shotgun suppressors that wont hold you back when a tight shot pattern is required, such as with skeet, trap, and bird hunting. * Full choke is for lead birdshot only (NO STEEL, BUCKSHOT or SLUGS)