The BOSS Chairman K 7.62 stainless standard end cap suppressor is the compact Chairman set up for bolt-action and piston rifles in 7.62mm and .308 (brand part no. CK-15060-762-SS-58-SE-BLK). It measures 1.5 inches by 6 inches and weighs 12 ounces without the mount. BOSS builds the stainless K from 17-4 H900 baffles, mount and cap in a Grade 9 titanium tube. The standard cap is the one BOSS specifies for non-gas-blowback actions, so this configuration belongs on a bolt gun rather than a direct-impingement AR. It is a good match for a short-barreled bolt rifle that should stay handy with the can mounted.

Key Specifications

• The caliber rating is .30 caliber, 7.62mm and .308, and BOSS says the K shines on subsonic 300 Blackout rifles.
• Dimensions are 1.5 inches by 6 inches, two inches shorter than the full-length Chairman.
• Weight is 12 ounces without the mount in stainless, the figure BOSS publishes for the K.
• Baffles, mount and end cap are 17-4 H900 stainless steel inside a Grade 9 titanium tube, a pairing built for full-power rifle heat.
• This version carries the standard end cap, the option BOSS lists for non-gas-blowback actions such as bolt guns and piston rifles.
• The included mount is a 5/8-24 direct thread, and the suppressor also accepts any standard HUB 1.375-24 pattern mount.
• The finish is Glacier Black high-temperature Cerakote, rated by BOSS to 1800 degrees F.

Frequently Asked Questions

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.

Standard or vented end cap? BOSS says the standard cap is for non-gas-blowback actions such as bolt guns and piston systems, and recommends the vented cap for AR-10s, AR-15s and other gas impingement firearms. This version has the standard cap.

Does the Chairman K have a barrel-length restriction? No. BOSS lists the Chairman K as full-auto rated with no barrel-length restrictions, and it is factory serviceable.

Buy the BOSS Chairman K 7.62 Suppressor, Stainless, Standard End Cap

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 BOSS‘s rifle suppressor lineup and our Lubbock, Texas team will handle the transfer.