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Most .308 ARs in this class arrive as a starting point. You put money into a trigger, then a handguard, then a brake, and eventually the rifle shoots the way it should have from day one. Rock River Arms took the opposite approach with the LAR-8 X-1 and built the upgrades in at the factory, then put a 1 MOA at 100 yards guarantee behind it. That is not a claim many production big-bore ARs are willing to make in writing.
The heart of this rifle is an 18 inch fluted stainless steel HBAR with a 1:10 twist, bead blasted and cryo treated to relieve stress in the steel and keep groups consistent as the barrel heats up. The fluting pulls weight off a heavy profile barrel while adding surface area for cooling, and the muzzle wears an RRA brake on standard 5/8-24 threads, which takes real bite out of .308 recoil during quick follow-up shots. A low profile gas block tucks under the 13 inch lightweight free float rail, so nothing touches the barrel between the receiver and the muzzle. The rail is M-LOK compatible for bipods, lights, and sling mounts wherever you want them.
Rock River's two stage trigger gives you a clean, predictable break that does a barrel like this justice, and the winter trigger guard leaves room for gloved hands on cold mornings. A Hogue rubber grip and the RRA Operator A2 stock round out furniture that is comfortable for long strings from the bench or prone. The forged A4 flat top upper comes optic ready with no sights installed, which is the right call on a rifle most people will top with a variable scope. At 9.5 pounds it settles nicely on bags and soaks up recoil instead of beating you up.
The rifle ships with one 20 round magazine and a Rock River hard case, and the LAR-8 platform's compatibility with common metric FAL pattern magazines makes finding spares simple and affordable. Zero it, find the load it likes, and this one will hold its own well past 500 yards.
It ships with one 20-round magazine, and the LAR-8 platform was designed around metric FAL pattern magazines. That means spares are widely available and typically cost less than proprietary .308 AR mags. It is one of the more practical perks of this platform.
No, the forged A4 flat top upper arrives bare and optic ready. Given the 1 MOA accuracy guarantee and the 18 inch barrel, most owners mount a variable power scope to get the full benefit. The 13 inch M-LOK rail gives you plenty of room for a bipod and other accessories.
Rock River guarantees 1 MOA at 100 yards, and the cryo treated, free floated stainless HBAR is built to deliver it. Like any precision rifle, it will show a preference for certain loads, so plan to test a few quality match offerings in the 168 to 175 grain range. Once you find what it likes, groups tighten up noticeably.
It does both well. The .308 chambering handles deer, hogs, and larger game with ease, and the 18 inch barrel keeps velocity up for longer shots. At 9.5 pounds it is happiest from a bench, blind, or stationary setup where that weight works in your favor for steady, accurate shooting.
| UPC | 842834103492 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | X308A1751BV1 |
| Action | |
| Barrel Length | 18" |
| Caliber/Gauge | .308 / 7.62 NATO |
| Capacity | 20 + 1 |
| Safety | Safety Selector Switch |
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