The Gemtech Abyss 5.56 suppressor with a 1/2×28 direct thread mount is a hard-use rifle can built around a low back pressure design (brand part no. 14372). Gemtech says the design cuts muzzle flash and decibels while reducing gas blowback, which helps both shooter comfort and host reliability. It is rated for 5.56 NATO/.223 Rem, 6mm ARC and 5.7x28mm, and it is full-auto rated. The 6.2-inch body combines 17-4PH stainless steel with 6Al4V titanium and weighs 16 ounces. It is built for a shooter who runs a 5.56 carbine hard and wants a can that stays out of the way of the gas system.

Key Specifications

• The caliber rating is 5.56 NATO/.223 Rem, 6mm ARC and 5.7x28mm, the cartridges Gemtech lists for this model.
• Length is 6.2 inches, compact for a hard-use rifle suppressor.
• Weight is 16 ounces, the published figure for this stainless and titanium build.
• Diameter is 1.64 inches, which leaves room for thick walls around the baffles.
• Materials are 17-4PH stainless steel and 6Al4V titanium, a pairing chosen for strength under heat.
• The suppressor finish is high-temp Cerakote, which holds up to the heat of sustained fire.
• The mount and muzzle device finish is Armornite with PVD, a hard treatment for the threaded parts.
• The included mount is a 1/2×28 direct thread, the standard 5.56 muzzle pitch.
• The rear attachment is 1.375-24 HUB, so the can also accepts HUB-pattern mounts.
• It is full-auto rated, with a GM-S1 end cap designed to minimize flash from the first shot to the last.

Frequently Asked Questions

What is the shortest barrel I can run the Abyss 5.56 on? Gemtech lists minimum barrel lengths of 7 inches for 5.56 NATO/.223 Rem, 7 inches for 6mm ARC and 3 inches for 5.7x28mm.

Can I use a quick-detach mount instead of the direct thread? Yes. The rear interface is 1.375-24 HUB, so HUB-pattern mounts thread in place of the included 1/2×28 direct thread mount.

Do I need ATF approval to buy this? No. As of October 9, 2026, ATF no longer requires Form 4 approval, registration or a tax stamp for suppressors. It transfers on a Form 4473 with a background check through a Class 3 (SOT) dealer. State and local laws still apply.

Buy the Gemtech Abyss 5.56 Direct Thread Suppressor

As of October 9, 2026, this suppressor transfers on a Form 4473 with a background check at your Class 3 (SOT) dealer, with no Form 4 or tax stamp; state and local laws still apply. It is a low back pressure can for a 5.56 rifle that gets run hard. Order through Gemtech‘s silencers and suppressed firearms lineup and our Lubbock, Texas team will handle the transfer, and it ships fast to your Class 3 dealer.