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Big-bore AR hunting rifles have carved out a real following in straight-wall country, and the Rock River Arms LAR-15M All Terrain Hunter is one of the better-sorted options in the category. Chambered in .450 Bushmaster, it throws a heavy bullet with enough authority to anchor whitetails, hogs, and black bear at practical hunting distances, all wrapped in a familiar AR package that handles like the rifles you already know.
The heart of this All Terrain Hunter is a 16-inch stainless steel barrel with a 1:24 twist, cryogenically treated to relieve stress in the steel for better consistency and longer service life. Rock River backs it with a 1 MOA accuracy guarantee at 100 yards, which is genuinely impressive for a big-bore semi-auto. Up front, the RRA Operator muzzle brake on 5/8-32 threads takes real bite out of the .450's recoil, and a mid-length gas system with a low-profile gas block keeps the action running smooth. The 13-inch extended free-float rail gives you a full-length top rail for optics plus M-LOK slots for a bipod, light, or sling mount without anything touching the barrel.
Rock River clearly built this rifle with cold-weather hunts in mind. The oversized winter trigger guard leaves room for gloved fingers, the Star safety selector is easy to find in a hurry, and the Hogue rubber overmolded grip stays tacky when your hands are wet or numb. The two-stage Ultra Match trigger is a standout feature, giving you a light takeup and clean break that makes precise shots on game a whole lot easier. The adjustable RRA Operator CAR stock lets you dial in length of pull around heavy jackets or lighter early-season layers.
At 6.8 pounds and 34.5 inches with the stock collapsed, this carbine carries easily to the stand and swings quick in thick timber. It ships with a 5-round magazine and an RRA hard case, so you're ready to top it with glass and head for the woods. For hunters who want big-bore knockdown in a platform they can run all day, this one delivers.
Rock River Arms guarantees 1 MOA at 100 yards with this rifle, which is excellent for a big-bore AR. The cryogenically treated stainless barrel and free-float handguard do a lot of the heavy lifting there, and the two-stage Ultra Match trigger makes it easy to shoot up to the barrel's potential. With quality hunting ammo, that translates to plenty of precision for deer-sized game inside 250 yards.
No, this rifle ships optic-ready with no iron sights installed. The flat-top upper and full-length Picatinny rail on the 13-inch handguard give you plenty of room to mount a low-power variable scope, red dot, or even thermal glass. Most .450 Bushmaster hunters run a 1-6x or 2-7x scope and call it good.
The .450 Bushmaster was designed to deliver big-bore stopping power from the AR-15 platform, and it shines on whitetail deer, hogs, and black bear at typical woods distances. It pushes a heavy .45 caliber bullet with serious energy on target out to around 200 to 250 yards. It's an especially popular pick with hunters who favor straight-wall cartridges.
It does a lot of work. The .450 Bushmaster produces stout recoil in lighter rifles, but the Operator brake redirects gases to cut muzzle rise and felt push noticeably. Combined with the 6.8-pound weight and the rubber Hogue grip, most folks find it comfortable enough for a full range session. The 5/8"-32 threads also let you swap muzzle devices down the road if you want.
| UPC | 842834101696 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 450B1562V1 |
| Action | |
| ATF Type | MODERN SPORTING RIFLE |
| Barrel Finish | Stainless Steel |
| Barrel Length | 16" |
| Caliber/Gauge | .450 Bushmaster |
| Capacity | 5 + 1 |
| Color | Black |
| Length | 40.1500 |
| Model | |
| Product Type | AR |
| Safety | Safety Selector Switch |
| Sights | No |
| State Restriction (IL) | NO SALE TO ILLINOIS PICA |
| Thread Pattern | 5/8"-32 tpi |
| Units per Box | 1 |
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