The Inland Monocore .45 caliber suppressor with a .578×28 base is the aluminum monocore can from Inland Manufacturing, threaded for the pattern used on most .45 ACP pistol barrels (brand part no. IM45.578). Inland builds the Monocore around a single anodized aluminum baffle core that lifts out for cleaning with no special tools. The series rates from rimfire to .45-70 and weighs about 19 ounces on a 1.5-inch body, with the exact weight set by the base. A direct-thread base keeps installation simple: thread it on and go. It suits a .45 pistol or carbine owner who wants a can that is easy to maintain at home.

Key Specifications

• The caliber configuration is .45 caliber, and Inland rates the Monocore series from rimfire up to .45-70.
• The base is a .578×28 direct thread, the common pitch on threaded .45 ACP barrels.
• Diameter is 1.5 inches, the body size Inland lists for the Monocore series.
• Weight is about 19 ounces, and Inland notes it varies with the base installed.
• The baffle is a single anodized aluminum I-Core monocore, designed to run dry or with Inland dB Foam.
• The finish is black hard anodize, a durable coating for a range can.
• The can is self serviceable, and Inland says it needs no special tools to take down.

Frequently Asked Questions

Which thread does this Monocore use? This version has a .578×28 direct thread base. Inland lists the Monocore mount style as direct thread with an optional BreekLok QD, and the body as hub and universal mount compatible.

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 Monocore full-auto rated? No. Inland lists the Monocore as not full-auto rated.

Buy the Inland Monocore .45 Suppressor, .578×28

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 Inland Manufacturing‘s silencers and suppressed firearms lineup and our Lubbock, Texas team will handle the transfer.