Mk12 Mod 0 SPR Gen II 5.56mm 18" Bbl 1-7 Twist Upper FDE
$1,510.45 at MidwayUSA · 3 stores
In stock
Rainier Arms Rellim Arms AR-15 Take Down Upper Receiver Assembly Combo Black
No ratings yetBest price
$1,499.99at OpticsPlanet
In stock Sale Lowest in 30 dayschecked Nov 10, 2026
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| OpticsPlanet | $1,499.99Salechecked Nov 10, 2026 | In stock | Buy at OpticsPlanet |
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
Lowest in-stock price in the last 30 days: $1,499.99 at OpticsPlanet. Dashed line = out of stock. Tracking since Oct 12, 2026.
Show the prices as a table
| Store | Latest | Lowest | Highest |
|---|---|---|---|
| OpticsPlanet | $1,499.99 | $1,499.99 | $1,499.99 |
Since Oct 12, 2026.
About this part
The Rainier Arms Rellim Arms AR-15 Take Down Upper Receiver Assembly Combo Black is a 5.56 / .223 upper receiver from Rainier Arms. One store lists it, OpticsPlanet at $1,499.99. The lowest in-stock price in the last 30 days was $1,499.99 at OpticsPlanet.
Fits and works with
- Caliber
- 5.56 / .223 · Shop matching ammo
- Bolt
- Standard AR-15 (5.56 / 300 BLK / .350 Legend) · Bolt carrier groups
Specifications
- Manufacturer
- Rainier Arms
- Color
- Black
- Platform
- AR-15
- Caliber
- .223 Wylde
From the manufacturer
Rainier Arms Rellim Arms AR-15 Take Down Upper Receiver Assembly Combo Black. 5" .223 Wylde configuration into a 8" 300BLK configurations in a matter of seconds. Specifications for Rainier Arms Rellim Arms AR-15 Take Down Upper Receiver Assembly Combo: Manufacturer: Rainier Arms Barrel Length: 8.5 in Barrel Profile: Medium Gas System Length: Pistol Length Barrel Twist Rate: 1-8 Firearms Threads Per Inch: 1/2x28 Finish: Nitride Color: Black Gun Model: AR-15 Fabric/Material: 416R Stainless Steel Nitrided Gas Block Journal Size-Diameter: .750 in Handguard Length: 7 in Handguard Style: M-LOK w/ Top Picatinny Rail System Gun Make: AR Platform Weight: 6.5 lb Magazine Included: No Condition: New Features of Rainier Arms Rellim Arms AR-15 Take Down Upper Receiver Assembly Combo Rellim Arms Proprietary Receiver/QD Barrel Nut Rainier Arms Upper Receiver Rainier Arms Urban Combat Rail - 7" Rainier Arms AR-15 Precision Match Grade BCG - Nitride Rainier Arms Match .223 Wylde Barrel - 8.5" / Rainier Arms Select 300BLK Barrel - 8" Rainier Arms Proprietary Avalanche Charging Handle Superlative Adjustable Gas Block A2 Flash Hider Weight: 3lbs 4.2 oz Package Contents: Rainier Arms Rellim Arms AR-15 Take Down Upper Receiver Assembly Combo What firearm models does the manufacturer say Rainier Arms Rellim Arms AR-15 Take Down Upper Receiver Assembly Combo is compatible with? The manufacturer suggests that Rainier Arms Rellim Arms AR-15 Take Down Upper Receiver Assembly Combo is compatible with AR-15Rainier Arms RA-TDURA-COMBO: Rellim Arms AR-15 Take Down Upper Receiver Assembly Combo Black
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