Precision Reflex’s Mark 12 Mod 0 SPR Gen II Upper Receiver is a complete, full-featured tactical upper that’s fully assembled and ready to shoot…once you install it on a mil-spec lower receiver. It is fitted with PRI’s Gen II Retro Carbon Fiber Forend that replicates the handguard of the U.S. Navy’s Mk 12 Mod 0 Special Purpose Rifle. You get a mile-long, uninterrupted expanse of Picatinny top rail extending from the rear of the receiver to the front of the forend. (Maybe we exaggerate slightly – half a mile.) There are also short 3" lengths of Picatinny rail up front in the 3, 6 and 9 o’clock positions.
The Mark 12 Mod 0 SPR Gen II Upper Receiver will deliver MOA accuracy right out of the box thanks to its free-floated, 18" Douglas barrel of high-grade 416 stainless steel with 1-7" target rifling and M4-type feed ramps. The bolt is custom-fitted to the barrel. And as the late-night infomercials say, that’s not all. The SPR Gen II upper also offers:
The PRI Mark 12 Mod 0 SPR Gen II Upper Receiver delivers a unique combination of accuracy, performance, and versatility, but it’s pleasantly basic where it counts. The forged, mil-spec AR-15 flattop receiver comes with a standard commercial carrier, so compatibility with a mil-spec (.250" pivot/takedown) lower is no problem.
Original price was: $1,777.00.$1,579.56Current price is: $1,579.56.
Precision Reflex’s Mark 12 Mod 0 SPR Gen II Upper Receiver is a complete, full-featured tactical upper that’s fully assembled and ready to shoot…once you install it on a mil-spec lower receiver. It is fitted with PRI’s Gen II Retro Carbon Fiber Forend that replicates the handguard of the U.S. Navy’s Mk 12 Mod 0 Special Purpose Rifle. You get a mile-long, uninterrupted expanse of Picatinny top rail extending from the rear of the receiver to the front of the forend. (Maybe we exaggerate slightly – half a mile.) There are also short 3" lengths of Picatinny rail up front in the 3, 6 and 9 o’clock positions.
The Mark 12 Mod 0 SPR Gen II Upper Receiver will deliver MOA accuracy right out of the box thanks to its free-floated, 18" Douglas barrel of high-grade 416 stainless steel with 1-7" target rifling and M4-type feed ramps. The bolt is custom-fitted to the barrel. And as the late-night infomercials say, that’s not all. The SPR Gen II upper also offers:
The PRI Mark 12 Mod 0 SPR Gen II Upper Receiver delivers a unique combination of accuracy, performance, and versatility, but it’s pleasantly basic where it counts. The forged, mil-spec AR-15 flattop receiver comes with a standard commercial carrier, so compatibility with a mil-spec (.250" pivot/takedown) lower is no problem.
1 in stock
Precision Reflex’s Mark 12 Mod 0 SPR Gen II Upper Receiver is a complete, full-featured tactical upper that’s fully assembled and ready to shoot…once you install it on a mil-spec lower receiver. It is fitted with PRI’s Gen II Retro Carbon Fiber Forend that replicates the handguard of the U.S. Navy’s Mk 12 Mod 0 Special Purpose Rifle. You get a mile-long, uninterrupted expanse of Picatinny top rail extending from the rear of the receiver to the front of the forend. (Maybe we exaggerate slightly – half a mile.) There are also short 3" lengths of Picatinny rail up front in the 3, 6 and 9 o’clock positions.
The Mark 12 Mod 0 SPR Gen II Upper Receiver will deliver MOA accuracy right out of the box thanks to its free-floated, 18" Douglas barrel of high-grade 416 stainless steel with 1-7" target rifling and M4-type feed ramps. The bolt is custom-fitted to the barrel. And as the late-night infomercials say, that’s not all. The SPR Gen II upper also offers:
The PRI Mark 12 Mod 0 SPR Gen II Upper Receiver delivers a unique combination of accuracy, performance, and versatility, but it’s pleasantly basic where it counts. The forged, mil-spec AR-15 flattop receiver comes with a standard commercial carrier, so compatibility with a mil-spec (.250" pivot/takedown) lower is no problem.
| Weight | 7.4 lbs |
|---|---|
| Make | AR-15 |
| Cartridge | AKK_5.56 x 45 |
| Make/Model | AR-15 |
| Length | 18'' |
| Twist | 1-8 |
| Style | Complete |
| Color | Flat Dark Earth |
| Finish | Cerakote |
| Muzzle | 1/2-28 |
We stock both premium factory-new components and high-quality once-fired brass. Please check the specific product listing title and description carefully; once-fired brass is fully inspected, but we always recommend resizing and inspecting prior to priming and powder charging.
Our standard reloading dies and case length trimmer accessories utilize industry-standard threads (typically 7/8"-14) compatible with major single-stage, turret, and progressive presses like RCBS, Hornady, Lee Precision, and Dillon. Caliber-specific trim gauges must match your exact brass caliber.
Yes. Non-hazardous reloading equipment (dies, case length trimmers, gauges, and unprimed brass) ships via standard ground carriers with no extra fees. Any orders containing smokeless powders or primers will incur standard federal HazMat handling fees and cannot be shipped via air transportation.
Precision reloading gear is valuable, so all orders are shipped with tracking enabled. As soon as your package is dispatched from our inventory warehouse, a tracking number will be emailed to you. You can monitor your shipment directly on our Track Order page using your unique Order ID.
We accept returns on unused, unaltered tools, case preparation equipment, and unopened component boxes within 30 days of item delivery. Due to safety and strict quality control on the reloading bench, we absolutely cannot accept returns on opened packs of primers, smokeless powder, or processed brass casings.
