The Griffin Revolution 9 MOD 4 is a modular-length 9mm pistol suppressor with a tool-less forward extension for short or full-size use (brand part no. GAREV9M4-W). Griffin Armament’s MOD 4 redesign makes the can more secure to mount, quicker to reconfigure and easier to strip for cleaning. Its patented CARBON-GARD baffles seal gas and carbon inside the stack with high-temp silicone O-rings, so fouling cannot lock the core into the tube. The booster housing is permanently installed and comes fitted with an EZ-LOK piston. It is a flexible can for a 9mm handgun or a subsonic pistol-caliber carbine.

Key Specifications

• The caliber is .36 cal (9mm), rated for 9mm Luger, .38 Special, subsonic .357 Magnum and subsonic .300 Blackout.
• Length is 6.56 inches short or 8.31 inches full size.
• Weight is 10.2 ounces short or 12.5 ounces full size, light enough for a handgun.
• Diameter is 1.375 inches, slim enough to see past most iron sights.
• Materials are 17-4 H900 stainless baffles in a 7075-T6 aluminum tube.
• Inside are eight CARBON-GARD baffles, and the can is user serviceable.
• Griffin publishes -20.05 dB on an M&P 9mm pistol and rates it full-auto for 60 rounds before cooling.

Frequently Asked Questions

What does the Revolution 9 come with? The suppressor with eight baffles, tube body, tube extension and 9mm bore end cap, a booster assembly with EZ-LOK piston, a Griffin Revolution armorer’s wrench and a microfiber pouch. EZ-LOK barrel adapters are sold separately.

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.

Are there barrel length limits? Griffin lists no minimum barrel length for supersonic and subsonic 9mm or for subsonic calibers of .357 and smaller.

Buy the Griffin Armament Revolution 9 MOD 4 Suppressor, 9mm

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 silencers and suppressors lineup and our Lubbock, Texas team will handle the transfer.