RPB Industries M10 SAP 9mm Open-Bolt Semi-Auto Pistol, Threaded Barrel, Matte Gray
This RPB Industries M10 SAP in 9mm Luger is a semi-automatic open-bolt pistol from the brief production run circa 1978–1982. It features a stamped and welded steel receiver with a matte gray finish, a threaded 5.75 inch barrel, and a 30+1 capacity. Marked with the Cobray snake-and-globe logo and Atlanta, GA manufacturer legend, it stands out for its distinctive configuration and short production window.
Condition
Overall Condition: Good condition, showing some signs of prior use and handling.
Bore Condition: Good - Clean, well-maintained, minor wear marks.
Bore Rifling: Good Rifling - Intact, well-defined lands and grooves.
Specific Condition Notes: This firearm is in solid shape. The exterior shows scratches and blemishes, and there are areas of pitting. The bore is bright and shiny.
What's Included
- 1x 30-round steel stick magazine (9mm M10 pattern)
Open bolt semi automatic pistol.
Manufactured by RPB Industries in Atlanta, Georgia, this SAP-marked M10 is roll-marked "SAP M10 CAL 9MM PAR" with the Cobray snake-and-globe logo. The semi-automatic open-bolt SAP configuration was produced for a short period, making these pistols notable to enthusiasts who seek period-correct examples.
The pistol uses an open-bolt blowback action with a top-mounted, reciprocating charging knob. A manual safety is positioned inside the trigger guard with a SAFE/FIRE legend, consistent with the M10 pattern. The sights are straightforward and durable: a protected front post with integral ears and a rear aperture in the back plate.
The 5.75 inch barrel is externally threaded (pitch not specified) and protrudes beyond the receiver. The receiver is stamped and welded steel with a matte gray finish, paired with a one-piece polymer pistol grip. The configuration delivers the classic M10 profile and handling features.
Chambered in 9mm Luger, the SAP variant accepts double-column magazines derived from the Walther MPL pattern. Capacity is 30+1, and this example includes one 30-round steel stick magazine compatible with the 9mm M10 pattern.