Mk12 Mod 0 SPR Gen II 5.56mm 18" Bbl 1-8 Twist Upper Black
$1,757.00 at Brownells · 3 stores
In stock
Mk12 Mod 0 SPR Gen II 5.56mm 18" Bbl 1-7 Twist Upper Black
Precision Reflex, Inc. · Upper Receiver
No ratings yetBest price
$1,757.00at MidwayUSA
Out of stock checked Oct 1, 2026
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| MidwayUSA Best price | $1,757.00checked Oct 1, 2026 | Out of stock | Buy at MidwayUSA | |
| Brownells | $1,759.00checked Oct 1, 2026 | Out of stock | Buy at Brownells |
Prices and availability change often, so confirm on the store's site before you buy. We may earn a commission from these links.
Price history
Dashed line = out of stock. Tracking since Sep 28, 2026.
Show the prices as a table
| Store | Latest | Lowest | Highest |
|---|---|---|---|
| Brownells | $1,759.00 | $1,759.00 | $1,759.00 |
| MidwayUSA | $1,757.00 | $1,757.00 | $1,757.00 |
Since Sep 28, 2026.
About this part
The Mk12 Mod 0 SPR Gen II 5.56mm 18" Bbl 1-7 Twist Upper Black is an 18" 5.56 / .223 upper receiver from Precision Reflex, Inc.. It's sold by 2 stores, from $1,757.00 to $1,759.00.
Fits and works with
- Caliber
- 5.56 / .223 · Shop matching ammo
- Bolt
- Standard AR-15 (5.56 / 300 BLK / .350 Legend) · Bolt carrier groups
- Barrel length
- 18" · Handguards
Specifications
- Manufacturer
- Precision Reflex, Inc.
- Color
- Black
- Platform
- AR-15
- Caliber
- 5.56 mm NATO
From the manufacturer
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 Mfg: Precision Reflex
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