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Rock River Arms built the X-1 Operator for folks who want big-bore AR power without giving up precision, and the spec sheet backs that up. This is a billet rifle top to bottom, with RRA's LAR-BT3 billet lower and A4 billet upper mated to an 18-inch fluted stainless steel barrel that's been cryogenically treated for consistency and barrel life. The 1:10 twist stabilizes everything from lighter varmint loads up to heavy match bullets, and Rock River backs it all with a 1 MOA accuracy guarantee at 100 yards. That's not marketing fluff on this one; the X-Series has earned a reputation for shooting well under that mark with ammo it likes.
The trigger deserves its own mention. RRA's two-stage Ultra Match Varmint trigger gives you a light, predictable break that makes precision work far easier than the gritty single-stage units found on a lot of .308 ARs. Feeding it all is a mid-length gas system with a low-profile gas block, which smooths out the cycling and keeps recoil impulse manageable for a semi-auto thirty caliber. Up front, the RRA Hunter muzzle brake on 5/8×24 threads takes real bite out of the recoil, so follow-up shots come back on target quickly.
The 17-inch lightweight free-float rail is M-LOK compatible, giving you room for a bipod, sling mounts, and lights without touching the barrel. A fixed Operator A2 stock gives you a solid, consistent cheek weld for glass work, and the Hogue rubber grip stays comfortable during long strings. All in, the rifle runs 9.5 pounds and 40.5 inches overall, which is right in the sweet spot for a precision gas gun you might still carry into the field.
Each rifle ships with a 20-round magazine, a hard case, an extended charging handle latch, and the manual. If you've been eyeing a .308 AR that can hunt, compete, and stretch its legs at distance, the X-1 Operator makes a strong case for itself.
Rock River Arms guarantees 1 MOA at 100 yards with this rifle, which is impressive for a semi-auto .308. The fluted, cryogenically treated stainless barrel and two-stage Ultra Match Varmint trigger do a lot of the heavy lifting there. With quality match ammo it likes, plenty of owners see groups tighter than the guarantee.
Yes, the chamber is cut for .308 Win and 7.62x51mm NATO, so you can run either. That gives you the flexibility of affordable surplus-style ammo for range days and premium .308 loads when accuracy matters most.
The LAR-BT3 platform feeds from SR-25/DPMS pattern .308 magazines, which is the most common and widely available big-bore AR magazine format. One 20-round magazine ships with the rifle, and spares are easy to find from Magpul and other major makers.
It's a strong pick for hogs, deer, and predator work where a fast follow-up shot matters. The 18-inch barrel keeps .308 velocity healthy while staying handier than a 20-inch gun, and the Hunter muzzle brake tames recoil noticeably. At 9.5 pounds it's more of a blind or truck rifle than a mountain gun, but that weight helps it stay steady on target.
| UPC | 842834106806 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | XBT31750B.V1 |
| Color | Black |
| Model | |
| Product Type | AR |
| Capacity | 20 |
| Caliber/Gauge | .308 / 7.62 NATO |
| Action | |
| Barrel Length | 18" |
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