Rock River Arms AR-15 Parts & Accessories
Rock River Arms is an Illinois AR maker started in 1996 by two brothers who used to build custom 1911s. Their LAR-15 rifles got a big boost from a DEA contract, and they still sell complete rifles, uppers and parts like their two stage triggers.
Rock River Arms was established in 1996.
Manufacturing origin: Made in USA.
Market positioning: Duty / Professional.
Rock River Arms has 153 products available on GunPartPicker, ranging from $2.99 to $1770.74.
Rock River Arms Product Categories
- Upper Receiver: 79 products
- Complete Rifle: 41 products
- Handguard: 9 products
- Trigger: 4 products
- Gas Block: 3 products
- Bolt Carrier Group: 3 products
- Buffer: 2 products
- Foregrip: 2 products
- Optic Mount: 2 products
- Safety: 1 product
- Magazine: 1 product
- Pistol Grip: 1 product
- Trigger Guard: 1 product
- Stock & Brace: 1 product
- Buffer Spring: 1 product
- Lower Receiver: 1 product
- Charging Handle: 1 product
Stock status: 41 in stock, 112 out of stock.
Rock River Arms on GunPartPicker
Builders have been adding Rock River Arms parts to their builds on GunPartPicker since April 2026. The most added: Rock River Arms Completed Upper Receiver Tactical Carbine .22 Long Rifle 16 Inch Barrel 1-16 Twist 1/2-28 Thread Free-Float Handguard A2 Flash Hider, Rock River Arms .156" 2-Stage Trigger and Rock River Arms Completed Upper Receiver Left Handed RAGE .223/5.56mm 16 Inch Barrel 1/2-28 Thread Free-Float Handguard A2 Flash Hider Black. About 27% of the 153 Rock River Arms products we track are in stock today.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
Rock River Arms products
Rock River Arms .156" 2-Stage Trigger$74.10In stock
Rock River Arms LAR-15M CAR A4 Complete Upper .350 Legend 16 Barrel$562.95In stock
Rock River Arms Predator HP 65C LAR-BT3 6.5 Creedmoor 20" AR Rifle, Black - 65C1534BT$1770.74In stock
Rock River Arms Star Safety Selector$11.54In stock
Rock River Arms Rrage 3G Semi Automatic Rifle 16" Barrel 5.56/.223 30 Round - 6 POS Stock 1:9 Twist - H-Bar Black$511.09In stock
Rock River Arms 9mm Carbine Buffer$27.95In stock
Rra LAR15 Coyote Rifle .223 Wylde 20 Bbl Fixed Stk Black$1099.84In stock
Rock River Arms LAR-15M Operator ETR Carbine OP1500 Rifle, 5.56x45mm NATO, 16" Barrel, 30+1, Semi-Auto, Optics-Ready, Threaded Barrel.$1058.31In stock
About Rock River Arms
Rock River Arms makes LAR-15 rifles, uppers and parts like their two stage triggers in Illinois. The LAR-15 won a DEA contract after beating 10 other makers in abuse testing.
Founded 1996, Colona, Illinois, Made in USA · Two stage triggers · Law enforcement contracts · Complete uppers
Why Rock River Arms
Rock River Arms was founded in 1996 in Colona, Illinois by brothers Mark and Chuck Larson. Mark had been head armorer at Springfield Armory, and the shop still does AR rifles, pistols, uppers and parts, plus 1911s and bolt guns.
The LAR-15 is the name to know. In 2003 it won a DEA contract after beating 10 other makers in abuse testing, and the FBI and US Marshals bought it too. Rock River's two stage triggers are a common upgrade on their own.
Rock River uppers run about $550 on GunPartPicker builds, against roughly $400 for the typical upper.
You pay extra for the name, and stock is spotty: in early October only about 31% of its listings across stores were in stock. If one is on the shelf at a fair price, we'd take a LAR-15 upper or a two stage trigger.
- The FBI and US Marshals bought the LAR-15 too, after the DEA adopted it in 2003.
- Besides AR-15 rifles and pistols, Rock River makes 1911 pistols and bolt action rifles.
Brand Overview
Available At
What Builders Choose
Based on real buildsTop Rock River Arms products builders are adding
Rock River Arms Forged A2 Upper Receiver Assembly Black
Rock River Arms Single Stage Trigger Kit, Black
Rock River Arms BLK2135 LAR-15 Pistol .300AAC 8" Barrel M-LOK w/SBA3 Brace
Rock River Arms Carbine Buffer
RRA LAR-15 FRED EICHLER 223REM COYOTE HAND GUARD
Customer Ratings & Reviews
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