RPB Industries SM10 .45 ACP Semi-Automatic Open Bolt Pistol Threaded 6”

SOLD FOR: $2,025.00

LSB#: WY241112AS006

Make: RPB Industries (Cobray)

Model: SM10 (Re-Milled)

Serial Number: SAP45325

Caliber: .45 ACP

Action Type: Semi-Automatic (Open Bolt)

Barrel Length: 6” (Threaded, 3/4×10)

Markings: The pistol is marked “RPB INDUSTRIES SM10 S/N: SAP45325” and “.45 AUTO” with the Cobray emblem. The selector is marked “SAFE” and “FIRE.”

Sights / Optics: The front sight is a post protected by two ears. The rear sight is a peep hole drilled into a flat metal base.

Grip Configuration & Condition: The pistol features integral textured grips, providing a secure hold.

Finish: Gray Parkerized upper and Gray Cerakoted lower.

Finish Originality: Refinished. The lower has been cut and rewelded as a semi-automatic gun. The welds are visible but appear very solid.

Bore Condition: The bore is bright with sharp rifling, though stubborn fouling is visible in the grooves. In this writer’s opinion, the bore rates 9/10.

Overall Condition: This pistol retains approximately 50% of its finish. The balance of the finish shows handling marks consistent with use and finish loss on the barrel. The welds from the re-milling process are visible but solid. The markings are clear and legible.

Mechanics: The action functions correctly. We did not fire this pistol. As with all used firearms, a thorough cleaning may be necessary to meet your maintenance requirements.

Magazine Quantity & Condition: One 30-round .45 ACP magazine in Very Good condition.

Box, Paperwork & Accessories: Includes an M10 .45 strap and hanger assembly.

Our Assessment:
The RPB Industries SM10 is a robust and distinctive .45 ACP semi-automatic pistol with a history rooted in the evolution of military and civilian submachine guns. Designed for reliability and customization, this example features a threaded 6-inch barrel (3/4×10), making it suppressor-ready and an excellent platform for various muzzle devices.

This particular pistol, serial number SAP45325, has been de-milled and re-milled as a semi-auto, giving it a unique status among collectors. The Cobray emblem, visible welds, and Parkerized and Cerakoted finish make it a standout historical piece. The integral textured grips provide a solid hold, and the peep-style rear sight is functional for quick target acquisition.

Complete with the M10 .45 strap and hanger assembly, this pistol is a great find for collectors, enthusiasts, or anyone seeking a unique addition to their firearm collection. With its historical appeal and rugged construction, the SM10 offers both collectibility and practical use.

So bid high and bid firm! Be sure to review our high-quality photos for a detailed look at the pistol’s condition. Good luck with your bid!