The Fuqua Ouch Mouse 5.7×28 suppressor in black titanium is the smallest centerfire can from Fuqua Precision Machining, sold under the FPM Gunworks name (brand part no. OM57TIBLK). FPM designed it around 5.7×28 carbines and .223/5.56 bolt-action rifles for shooters who want the smallest package that still works. The titanium version weighs 3.2 ounces and measures 5 inches long without the mount, with a 1.25-inch outside diameter. Its internal geometry is meant to cut muzzle blast without adding length or weight, which makes sense on a varmint rig or a light precision rifle.

Key Specifications

• The primary rating is 5.7×28, full-auto rated, the cartridge FPM built the Ouch Mouse around.
• The .223/5.56 rating is bolt-gun only, so it belongs on a bolt action in that caliber.
• Length is 5.0 inches without the mount, which keeps a small-caliber rifle short.
• Weight is 3.2 ounces in titanium, light enough to balance on a slim barrel.
• Outside diameter is 1.25 inches, a slim profile for varmint and lightweight rifles.
• The thread pattern is Alpha, with a 1/2×28 direct mount included in the box.
• The finish is black over a titanium body, the colorway this SKU is sold in.

Frequently Asked Questions

Can I use the Ouch Mouse on a 5.56 rifle? Only on a bolt action. FPM lists .223/5.56 as bolt-gun rated only, while 5.7×28 is the rating the maker lists as full-auto rated.

How does the Ouch Mouse attach? It uses the industry-standard Alpha thread pattern, and the included 1/2×28 direct-thread mount fits most 5.7 and 5.56 bolt-gun barrels out of the box.

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 Fuqua Ouch Mouse 5.7mm Suppressor, Black Titanium

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 tiny, light can for a 5.7 carbine or a small-caliber bolt gun. Order through Fuqua Precision Machining‘s silencers and suppressed firearms lineup and our Lubbock, Texas team will handle the transfer, and it ships fast to your Class 3 dealer.