New GSL GT-556 is a heavy-duty 5.56mm NATO/.223 suppressor built for real duty use, pairing a titanium tube with Inconel components under a high-temperature Cerakote finish, and keeping things compact at 7.0" length, 1.50" diameter, and 13.5 oz (weight listed without QD adapter parts) while delivering a claimed 32 dB of sound reduction. Full-auto rated and made in Jackson, Michigan, the GT-556 runs GSL’s Bi-Lock QD system for fast, secure on/off, and it includes the 1/2×28-2B Bi-Lock flash hider so you’re ready to mount it right away; it’s rated for 5.56×45/.223 down to a 10.5" minimum barrel length.