The Barrett AM338 titanium suppressor with mount (Barrett part no. 18414) is a .338-rated adapter-mount can from the AM and AML family. It attaches through a Barrett muzzle brake adaptor, so it locks onto a Barrett recoil-reducing brake on the barrel. Barrett CNC machines the titanium alloy body and orbital welds it, then machines the bore for concentricity so accuracy and point of impact stay consistent. At 9.9 inches and 1.3 pounds, it is light for a can that covers .338 magnums. It suits a long-range rifle in .338 or any smaller chambering.

Key Specifications

• The caliber rating is .338 and less, Barrett’s own wording.
• Length is 9.9 inches, compact for a magnum-rated can.
• Diameter is 1.8 inches, sized for large-bore rifles.
• Weight is 1.3 pounds, light for its caliber class.
• The body is titanium alloy, CNC machined and orbital welded, to keep weight down without losing durability.
• The mount is the Barrett muzzle brake adaptor, which pairs the can with a Barrett brake.
• Barrett lists sound reduction of 23 to 28 dB for the AM338.

Frequently Asked Questions

What muzzle threads does the AM338 work with? Barrett lists the AM338 for 3/4-24 and 5/8-24 muzzle threads through its muzzle brake adaptor. Confirm your barrel’s thread so the brake matches.

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.

Why does the bore concentricity matter? Barrett machines the bore for concentricity so the suppressor does not compromise accuracy and any point-of-impact shift is minimal and repeatable.

Buy the Barrett AM338 Titanium Suppressor with Mount

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 brings Barrett’s precision-rifle engineering to the muzzle of a .338. Order through Barrett Firearms‘s silencers and suppressed firearms lineup and our Lubbock, Texas team will handle the transfer.