Ultra Rare RPB Industries M10 SAC Open Bolt 9mm Carbine MAC10 M11

SOLD FOR: $2577

WOA#: WY230115AS041

Our Assessment:  The RPB SAC M10 Open Bolt Carbine was a semi-automatic version of the M10 submachine gun, which was designed by Gordon Ingram in 1964. The M10 was produced by Military Armaments Corporation and was available in 9mm and .45 ACP, and a smaller version called the M11 in .380 ACP.  The M10 was notable for its low cost of production, high rate of fire, and small size. RPB Industries later bought up the assets of Military Armament Corporation and resumed production under the RPB banner.

The RPB SAC M10 Open Bolt Carbine was submitted to the BATF for approval in 1978, and was approved as a semi-automatic rifle. Despite its low price and aggressive marketing, the gun did not gain wide acceptance among legitimate buyers. However, it became a popular weapon among criminals, particularly in the drug wars of South Florida in the early 1980s.

During this period, criminals would buy the semi-automatic version of the M10 SAP and SAC and then modify it to fire in full-auto, making it a highly sought-after weapon for criminal gangs. The M10 SAP was one of the most popular illegal machine guns of the era.

There were a few others, but this one made up the lion’s share of the open-bolt semi-auto pool. Despite a valiant struggle and a court case lost, the 1982 reclassification shut off much of RPB’s sales, and the company folded.  Claim this Rare Gem of firearms history today that has been grandfathered in.  Because it is a pre 1982 production it is fully legal to sell.  Anything after 1982 is illegal so we are lucky here!  Good Luck!!!

With respect to the machinegun classification of the SM10 and SM11A1 pistols and SAC carbines, under the National Firearms Act, pursuant to 26 U.S.C. 7805(b), this ruling will not be applied to SM10 and SM11A1 pistols and SAC carbines manufactured or assembled before June 21, 1982. Accordingly, SM10 and SM11A1 pistols and SAC carbines, manufactured or assembled on or after June 21, 1982, will be subject to all the provisions of the National Firearms Act and 27 C.F.R. Part 179.

Make: Cobray, RPB Industries

Model: SAC M10 (Semi-Auto Carbine)

Serial Number: 81-0008311

Year of Manufacture:  1981 Pre 1982 Open Bolt Ban

Caliber: 9mm

Action Type: Semi-Automatic, Blowback, Open Bolt (Bolt Closes on Trigger Pull)

Markings:  The right side is marked, “SAC M10. CAL 9MM PAR RPB INDUSTRIES, INC. ATLANTA, GA. U.S.A. /  SAFE FIRE /  81-0008310”.  The right side of the receiver has a Cobray logo.  The top of the receiver has “SAFE and “FIRE” located on opposite sides of the resting charging handle.

Barrel Length:  18.75”

Sights / Optics: Iron sights. The front sight is a fixed post made of a bent metal wire between two protective ears fixed to the front of the barrel shroud. The rear sight is a fixed pinhole sight between two protective ears fixed to the frame.  .

Stock Configuration & Condition: The buttstock is a wire frame buttstock with steel buttplate and is welded to the receiver.  There is a vented barrel shroud/handguard that extends from the receiver and is fixed to a lug threaded over the barrel’s proprietary threads.  The mag well serves as a pistol grip with a polymer backstrap.  The bottom of the backstrap locates the mag release lever.  The right side of the receiver has a finger safety switch located under the frame alongside the trigger guard.

Magazine Quantity & Condition: 2x 32 round stick magazines and 1x 36rd stick magazine in Fine condition. Two magazines are Cobray.

Type of Finish: Parkerized

Finish Originality: Original

Bore Condition: The bore is bright and the rifling is sharp. There is no erosion in the bore.

Overall Condition: This pistol retains about 98% of its metal finish. The markings are crisp. There is slight wear to the overall, please see photos for a better understanding of the condition.  There are light scratches spread throughout.  The front sight right protective ear is slightly bent to the left.  Overall, this handgun rates in about Fine condition.

Mechanics: OPEN BOLT.  PRE BAN.  LEGAL.  The charging handle rotates to serve as a safety selector (LOCKS BOLT IN PLACE). The finger safety next to the trigger keeps the bolt from locking open or being pulled all the way to the rear to allow a round to charge into battery.  The action functions correctly. We did not fire this rifle. As with all used firearms, a thorough cleaning may be necessary to meet your maintenance requirements.

Box, Paperwork & Accessories: None.

Ultra Rare RPB Industries M10 SAC Open Bolt 9mm Carbine MAC10 M11
Ultra Rare RPB Industries M10 SAC Open Bolt 9mm Carbine MAC10 M11