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5.56x45 Rock River Arms

Rock River Arms is a respected American firearms manufacturer based in Colona, Illinois, known for precision-built products and a commitment to quality. Their lineup includes a wide selection of rifles, rifle accessories, AR15 models, and classic 1911 pistols. Rock River Arms is recognized for its AR-platform rifles, including the LAR-15 and LAR-8 series, which are engineered for reliability and accuracy. Featured products are available in popular calibers such as .223 / 5.56 and.308 Win, supporting a range of shooting applications. With a history of innovation and contracts with law enforcement agencies, Rock River Arms continues to deliver performance-focused firearms and components. Browse the full selection to shop Rock River Arms for your next build or upgrade.

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6 Product(s)
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Rock River Arms DS1750 Rrage 2G Rifle NATO 6 POS Stock 16" 1:9 30rd Black

Rock River Arms DS1750 Rrage 2G Rifle NATO 6 POS Stock 16" 1:9 30rd Black

$527 78
In Stock
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Rock River Arms AR1910 LAR-15M Assurance-M Carbine 16" 30+1, Black, RRA Operator Stock & Hogue Grip, Flip-Up Sights, Carrying Case

Rock River Arms AR1910 LAR-15M Assurance-M Carbine 16" 30+1, Black, RRA Operator Stock & Hogue Grip, Flip-Up Sights, Carrying Case

$1083 77
In Stock
Only 3 Left!
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Rock River Arms BB0470 LAR-15M Rrage 3G Complete Upper, 5.56x45mm NATO 16", Black, Aluminum Rec, 15" M-LOK Handguard, A2 Flash Hider, No Forward Assist

Rock River Arms BB0470 LAR-15M Rrage 3G Complete Upper, 5.56x45mm NATO 16", Black, Aluminum Rec, 15" M-LOK Handguard, A2 Flash Hider, No Forward Assist

$451 53
In Stock
Only 3 Left!
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Rock River Arms AR1700V1 LAR-15M R3 Competition 18" Stainless 30+1, Black, RRA NSP-2 Stock & Hogue Grip, Carrying Case

Rock River Arms AR1700V1 LAR-15M R3 Competition 18" Stainless 30+1, Black, RRA NSP-2 Stock & Hogue Grip, Carrying Case

Out of Stock
Rock River Arms LAR-15M Operator ETR Carbine OP1500 Rifle, 5.56x45mm NATO, 16" Barrel, 30+1, Semi-Auto, Optics-Ready, Threaded Barrel.

Rock River Arms LAR-15M Operator ETR Carbine OP1500 Rifle, 5.56x45mm NATO, 16" Barrel, 30+1, Semi-Auto, Optics-Ready, Threaded Barrel.

Out of Stock
Used Rock River Arms LAR15, Semi-Automatic AR-15 Rifle, 5.56 NATO, 16" Barrel, (1) 30rd Magul Magazine, LEO ONLY MARKING - Surplus Good Condition

Used Rock River Arms LAR15, Semi-Automatic AR-15 Rifle, 5.56 NATO, 16" Barrel, (1) 30rd Magul Magazine, LEO ONLY MARKING - Surplus Good Condition
Out of Stock
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