The Griffin Armament Optimus 6 Taper Mount suppressor is a 6mm-bore, additively manufactured rifle can rated for 5.56mm and 6mm (brand part no. GAOP6TM-W). Griffin prints the core from 17-4 stainless steel with a high-flow baffle stack that cuts system backpressure compared with a traditional can, and a quad-tine flash hider end cap tuned alongside it keeps flash down. This version uses Griffin’s Taper Mount and arrives with an EZ-Brake in .22 caliber 1/2×28, so it is ready for a standard 5.56mm barrel. It measures 6.59 inches and weighs 16.5 ounces, a short package for the internal volume of its 1.73-inch tube. It is a strong match for a 5.56 carbine or a 6mm precision rifle.

Key Specifications

• The caliber rating is .22 caliber (5.56mm) and 6mm, the two ratings Griffin publishes.
• The mount is the Griffin Taper Mount, compatible with Griffin Taper Mount muzzle devices.
• An EZ-Brake (.22 caliber, 1/2×28) is included with the Taper Mount model.
• Overall length is 6.59 inches on the Taper Mount model.
• Weight is 16.5 ounces on the Taper Mount model.
• Diameter is 1.73 inches, which adds internal volume for gas expansion.
• The material is 17-4 H900 stainless steel throughout, with a printed baffle core.
• The end cap is a quad-tine flash hider tuned with the high-flow baffle stack.
• The finish is high-temp Cerakote over a tube machined smooth after printing.
• Griffin lists it as full-auto rated, sealed and not user serviceable.

Frequently Asked Questions

Which muzzle devices work with the Taper Mount Optimus 6? Griffin Taper Mount muzzle devices, and an EZ-Brake in .22 caliber with 1/2×28 threads ships with this model.

Why choose a low-backpressure suppressor? Griffin designed the high-flow baffles to reduce system backpressure over a traditional can, which means less gas back toward the shooter on a semi-auto rifle.

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 Griffin Armament Optimus 6 Suppressor, Taper Mount, 6mm Bore

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. Order through Griffin Armament‘s rifle suppressor lineup and our Lubbock, Texas team will handle the transfer.