The Maxim Defense MS-22 suppressor brings Maxim’s M-Kore technology to the .22 LR (Maxim Defense part no. 48351). Maxim points out that the .22 LR is notoriously dirty, so it built integrated carbon cutters into this can, and the well-spaced baffles leave fewer tight crevices to scrub. The body is 7075 aluminum, 5.9 inches long and about 3.5 ounces, and it threads directly onto a 1/2-28 muzzle. It has no barrel length restrictions and disassembles with common tools. It is a sensible choice for a rimfire rifle or pistol that gets shot a lot.

Key Specifications

• The caliber rating is .22 LR, the rimfire cartridge Maxim designed this can around.
• The mount is a 1/2-28 direct thread, the common thread pitch on rimfire barrels.
• Length is 5.9 inches, short enough to keep a rimfire host balanced.
• Outer diameter is 1.0 inch, a slim profile for a small-bore can.
• Weight is 3.5 ounces, light enough to leave on a rimfire pistol.
• The body is 7075 aluminum, a strong, light alloy.
• The finish is anodized, a hard surface for wear resistance.
• Integrated carbon cutters help clear fouling from the tube during cleaning.
• Threads run left-hand from core to mount, which keeps the can from loosening as it is installed.
• Maxim lists a sound figure of 108.7 dB at the left ear.

Frequently Asked Questions

Is the MS-22 full-auto rated? Maxim lists the MS-22 as full-auto rated for .22 LR and states it has no barrel length restrictions.

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.

Can I take it apart to clean it? Yes. Maxim designed it to be fully user-serviceable, and it disassembles with common tools.

Buy the Maxim Defense MS-22 .22 LR Suppressor, 1/2×28 Direct Thread

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 Maxim Defense‘s suppressors lineup and our Lubbock, Texas team will handle the transfer, and it ships fast to your Class 3 dealer.