Our best-selling GMR-13 set our reputation in the 9mm carbine market as “the one that works.” With the newly redesigned GMR-15, we’ve taken everything that works and only added more. Last round lock back, an improved magazine release and a flared mag. well are the highlight features of this new receiver. If you’re in the market for solid home defense carbine or PCC game gun now, your timing couldn’t be better.
The GMR-15 9mm is a versatile platform that excels in both function and accuracy. Complete carbine builds are available with either our forged JP-15 or GMR-15 dual-charging upper that includes our 9mm Silent Captured Spring standard. The end result is a system that cycles with virtually no recoil. That equates to extremely fast sight recovery with solid 3 MOA accuracy from a pistol cartridge usable out to 100 yards.
With the high-performance ammunition available from many manufacturers, the GMR-15 makes a solid choice for a competitive match carbine (especially considering the cost savings of 9mm ammo over .223) and is also well-suited to home defense applications given its impressive .357 magnum-comparable ballistics with a carbine-length barrel. The lack of concussion in enclosed spaces and greatly limited over-penetration issues when compared to most rifle cartridges only enhance its suitability in this arena.
Designed with the needs of law enforcement in mind, the GMR-15 accepts the same G17 pistol magazines as Glock 9mm pistols for carbine/sidearm compatibility. Complete military and law enforcement packages include our own JP select-fire trigger setup for precision trigger control in both semi- and full-auto modes. As with all JP rifles, the GMR-15 comes with parts and service readily available from a trusted US manufacturer.
|Receiver:||Machined-from-billet 9mm lower with choice of forged JP-15™ upper or machined GMR-15™ dual-charging upper ($600 upgrade)|
|Receiver Finish:||Matte black|
|Barrel:||JP Supermatch™ air-gauged, button-rifled, cryogenically treated barrel|
|Barrel Finish:||Mag. Phosphate|
|Muzzle Treatment:||JP tactical or competition compensator|
|Buttstock:||Hogue Overmolded, Mission First Tactical, Magpul MOE, CTR or ACS-L|
|Grip:||Hogue pistol grip|
|Hand Guard:||JP MK III Hand Guard System|
|Operating System:||Blowback with JP 9mm Silent Captured Spring|
|Trigger:||JP Enhanced Reliability Fire Control Package with a weight of 3.5-4 lbs.|
|Accessories:||JP accessory pack including operator's manual, backpack soft case and more|
|Base Price: $1699|
|9mm Upper Assembly|
|Base Price: $859|
1/2-36 TPI (9mm)
.406 Exit (9mm)
.406 Exit (9mm)
|JPBC-9MMA||JP Enhanced 9mm AR Bolt
|JPSCS2-9MM||9mm Silent Captured Spring
|JPBC-9MM-SCS2||JP Enhanced 9mm AR Bolt with Gen 2 JPSCS2-9MM
|JPFP-9MM||JP 9mm Firing Pin||$14.95|
|JPS-9MMFP||JP 9mm Firing Pin Spring||$2.49|
|GL-9MM-10R||10 Round 9mm Glock 26 Magazine||$24.95|
|GL-9MM-17R||17 Round 9mm Glock 17/34 Magazine||$24.95|
|GL-9MM-31R||31 Round 9mm Glock 17/34 Magazine||$39.95|
|RR9MM 0115||Rock River Arms 9mm Mag Well Conversion Block||$175.00|
|RR9MM 0116A||32-Round 9mm Magazine||$35.00|
|RR9MM 0107||9mm Carbine Buffer||$25.00|
|JPS-OSC.308||Custom Centerless Ground and Polished Operating Spring|
Length: Carbine Length
The GMR-15 action is straight blowback and was calibrated with standard-pressure loads. It has not been tested with Corbon +P ammo. The bolt does not lock during firing, so the primary effect of shooting high-pressure loads is that the bolt will open faster, making your immediate risk that the cases will bulge or rupture because of this. In the long term, you will see a bit more wear and tear from the extra bolt velocity. The 9mm AR is known for being abusive to the hammer pin but we minimize this by using a ramped bolt. Thanks to this and our anti-walk pins, we have not had any hammer pin failures to this point.
Like most all of the 9mm bolts on the market, our bolt assembly is ramped in order to reduce hammer wear during the re-cocking point of the firing cycle. The bottom of a 9mm bolt also doesn't come down quite as low as a standard bolt carrier. These two factors together tend to cause the hammer to not be pushed down quite as far as when cycling .223. JP fire control components as well as Mil-spec ones do not experience this problem, but certain other trigger components will not function with 9mm bolts even though they are fine for .223.
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