The JK Armament 155 SBRX 30 is a modular .30 caliber suppressor designed for hard use on short barrels, and it carries JK’s Tone Technology for a deeper sound signature. It pairs a 17-4 stainless steel blast baffle with four Grade 5 titanium billet baffles, finished in Armor Black C-192 Cerakote. Baffles can be added or removed without special tools, so one can covers a compact setup or a longer, quieter one. It uses the industry-standard HUB 1.375×24 mount size, and a JK 155 PRO Quick Attach Taper Mount is included. A hunter or rifle shooter who wants a configurable can for short barrels will find it fits.

Key Specifications

• Caliber support runs from .22 LR through 300 Win Mag, including .223/5.56, 300 Blackout and .308 Win.
• Length is 3.3 to 6.6 inches, or 2.8 to 6.0 inches without a mount, depending on how many baffles you stack.
• Weight is 4.4 to 12.8 ounces, from the micro configuration to the full five-baffle stack.
• Construction is a 17-4 stainless steel blast baffle with Grade 5 titanium baffles, which keeps weight low and strength high.
• The mount size is HUB 1.375×24, which opens up direct-thread, tri-lug and quick-detach options.

Frequently Asked Questions

What comes in the box? JK lists the suppressor, a JK 155 PRO Quick Attach Taper Mount, a JK 155 PRO 2.5-inch tube, baffles, a flash reducer end cap and an owner’s manual. The mount is a mount, not a muzzle device.

Can it be shortened? Yes. It runs 3.3 inches in the micro configuration and 6.6 inches with all five baffles, and no special tools are needed.

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 JK Armament 155 SBRX 30 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. Order through JK Armament‘s silencers and suppressed firearms lineup and our Lubbock, Texas team will handle the transfer.