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Foxtrot Mike (FM) Products AR-15 5.56MM FM-15 Gen 2 Complete Upper Receiver - 13.9" (Rainier Arms Exclusive)
Complete Upper
Special Price
$599.99
Regular Price
$659.95
The Foxtrot Mike Products FM-15 Gen 2 Side Charging AR-15 Upper Receiver features a unique dual spring recoil system nested in the top of the upper receiver allowing the use of a folding stock. This recoil system is paired with a mid-length direct impingement gas system and a proprietary lightweight bolt carrier group for a smooth and reliably functioning rifle. The gas block features an indexing pin and a coil pin to keep it locked in place against the lightweight contoured barrel for an extremely robust system.
Specifications:
- Caliber: .223 Wylde
- Op. System: Direct Impingement
- Barrel Length: 13.9”
- Barrel Contour: Lightweight
- Barrel Material: 41v50
- Barrel Twist: 1:8
- Muzzle Device: A2 Flash Hider
- Muzzle Thread: 1/2 X 28
- Receiver: Billet Aircraft Aluminum
- Weight: 3.8 lbs
- Length: 22.75”
- Handguard: 13.125” MLOK Free Float
- Charging Handle: 4-position Front Charge
- Gas System: Midlength
- Gas Block: 0.625” adjustable
- Finish: Type III Hard Black Anno.
| SKU | MIKE15-13.9U-RAD |
|---|---|
| Product Type | Complete Upper |
| Manufacturer | Foxtrot Mike |
| Thread Pitch | 1/2x28 (.22 cal) |
| Twist Rate | 1:8 |
| Color | Black |
| Gas System Length | Mid |
| Mount | M-LOK |
| Platform | AR-15 |
| Barrel Length | 13.9" |
| Caliber | 5.56mm |
| Threaded | Yes |
