Description
These upper receivers are designed for use with M-11/9, 9mm semi-auto pistols. M-11/9 pistols were originally designed and manufactured by S.W.D. but have also been manufactured by Leinad, and more recently by Master Piece Arms (MPA). The S.W.D. guns are stamped with a “COBRAY” logo and are commonly referred to as being manufactured by Cobray. All of these manufacturers have also made carbine variants. Master Piece Arms makes many models of the M-11/9 including a shortened version (930 series). These upper receivers will only fit the full size M-11/9. They are only offered in 9mm caliber. Our Uppers will NOT work on the most recent MPA lowers that have a curved back or a glock magwell. The MAX-11S upper receiver was originally designed for the M-11/9 semi-auto pistol. It is also compatible with a full auto bolt and can be used with a registered receiver M-11/9 SMG. Features include a 12-1/2″ long accessory rail on top and 3″ long rail on the bottom. Hard mount points for additional rails on right and left side. The MAX-11S attaches to the stock M-11/9 lower receiver without any modification to the lower receiver and uses your existing retaining pin. Easy to convert- Remove pistol upper from lower receiver. Remove bolt assembly from your upper and slide it into MAX-11S upper receiver. Install upper into lower receiver and replace retaining pin. The picture above shows a MAX-11S with additional Lage Mfg. accessories that are not included with the MAX-11S upper receiver. Lower receiver is not included.
Drawing shown above with 16″ barrel is for reference. MAX-11S mk2 has an 8-3/8″ barrel.
Designed for use with a M-11/9 semi-auto pistol.
Compatible with full auto bolts for use with an M-11/9 SMG.
Requires no modification of the lower receiver to install upper.
Uses existing bolt assembly from your M-11/9 pistol.
8-3/8″ barrel threaded 1/2-28 at muzzle with “Birdcage” flash suppressor. Mock Suppressor available as an upgrade.
12-1/2″ long accessory rail along top for mounting a scope or removable sights.
3″ long accessory rail along bottom for grip, laser, light or other accessory.
Handstop in front of bottom rail to provide positive indexing and a repeatable grip.
Mounting points on left and right side of foregrip for mounting additional rails.
Side cocking, non-reciprocating charging handle on left side.
Steel shell deflector.
Upper receiver is manufactured from 6061 Aluminum and finished in hard coat black anodize.
Barrel is made from chrome moly steel and finished in black oxide, rifle twist is 1:16.
Overall dimensions of MAX-11S pistol upper receiver:
Length: 14-1/8″
Width: 1-3/8″ to handguard, 2″ to cocking knob.
Height: 2-1/2″ (2-3/8″ to bottom of handstop)
Weight: 1 pounds 14 ounces.
Overall dimensions of the MAX-11S when assembled to an M-11/9 semi-auto lower receiver with a 8-1/2″ stock:
Overall length- 23-1/2″
Width: 1-3/8″ to handguard, 2″ to cocking knob.
Height: 6-1/4″
Weight unloaded is 4 pounds, 13 ounces.
Weight with a loaded 30 round magazine is 5 pounds, 14 ounces.
Please note, if you have any functional problems with your semi-auto M-11/9, please have it repaired by a qualified Gunsmith prior to installing the MAX-11S upper receiver. Installation of the MAX-11S will not resolve any pre-existing problems with your gun.
Use of steel cased, reloaded/re-manufactured ammo will void the warranty.
