Rainier Arms Mountain MOD2 5.56 NATO AR-15 Barrel - 12.5"
AR-15 Barrel
In stock
Satisfaction Guarantee
We are so confident in our barrels that we offer a 100% money back guarantee within 90 days of purchase. If our barrels don’t meet or exceed your expectations, for any reason, return it for a full refund.
$300.00
Allow us to reintroduce ourselves. We have brought back our Mountain Series of barrels for those of you who want the accuracy you expect from Rainier Arms in a nearly indestructible package. These barrels are made out of 4150 CMV and nitrided as well. That means these barrels will take anything you can throw at them. They are meant to be shot, and shot a lot. The half-fluted profile maximizes heat dissipation and helps reduce weight.
Specifications:
- 4150 CMV Steel
- Length: 12.5”
- Twist: 1:7
- Thread Pitch: 1/2x28
- .750 Gas Block Seat
- 5.56 NATO Chamber
- Mid length Gas System (Gas Tube not Included)
- M4 Feed Ramps
- Half-Fluted Profile
- Weight: 1.54 lbs.
| SKU | RAB-CMV-556-125-M-HF-BLK |
|---|---|
| Product Type | AR-15 Barrel |
| Manufacturer | Rainier Arms, LLC |
| Gas Block Diameter | .750" |
| Thread Pitch | 1/2x28 (.22 cal) |
| Twist Rate | 1:7 |
| Gas System Length | Mid |
| Finish | Nitride |
| Platform | AR-15 |
| Barrel Length | 12.5" |
| Caliber | 5.56 NATO |
