The YHM R45 .45 caliber suppressor is the most versatile can in Yankee Hill Machine’s lineup (brand part no. YHM-2190-24). Its .45 bore and robust build let it run on host firearms chambered for anything from .17 HMR up to .45-70 Government. It is built from heat-treated 17-4 PH stainless steel and ships with a 5/8×24 direct thread mount and two suppressor wrenches. Because the can accepts YHM’s full lineup of 1-3/8×24 HUB mounts, the attachment can change along with the host. It fits a shooter who wants one can for a .45 carbine, a .300 Blackout rifle and a lever gun alike.

Key Specifications

• The bore is sized for .45 caliber, which lets it pass everything smaller.
• YHM rates it for .17 HMR through .45-70 Government, so one can serves many hosts.
• Weight is 12 ounces, or 13.6 ounces with the adapter.
• Length is 6.4 inches, or 6.7 inches with the adapter, a size that suits carbines and rifles alike.
• Diameter is 1.562 inches, the figure to check against handguard clearance.
• Construction is heat-treated 17-4 PH stainless steel, built for rifle pressures.
• The included mount is a 5/8×24 direct thread HUB adapter, the common thread on .30 caliber and larger barrels.
• The can accepts the full lineup of 1-3/8×24 HUB mounting options, so the attachment can change with the host.
• YHM publishes a sound rating of 132 dB.
• Its full-auto rating is listed as Limited, and it is made in the USA.

Frequently Asked Questions

What are the R45’s minimum barrel lengths? YHM lists 16 inches for 7.62×51 and .308 Winchester, 16 inches for 5.56mm NATO and 7.5 inches for .300 Blackout.

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.

Is the R45 full-auto rated? Yankee Hill Machine lists its full-auto rating as Limited, so it is not meant for sustained automatic fire.

Buy the Yankee Hill Machine R45 .45 Caliber Suppressor, 5/8×24 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 Yankee Hill Machine‘s silencers and suppressed firearms lineup and our Lubbock, Texas team will handle the transfer.