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
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Rock River Arms
Overview
The Rock River Arms Completed Upper Receiver is designed for builders looking to create a .22 LR carbine. Featuring a 16-inch barrel with a 1:16 twist rate, this upper provides a balance of stability and accuracy for .22 LR ammunition, making it suitable for both target shooting and training. The 1/2x28 thread pitch allows for easy attachment of muzzle devices, while the free-float handguard enhances precision by isolating the barrel from any gripping pressure. This upper is commonly used in .22 LR builds, ideal for those wanting a lightweight and versatile platform.
Specifications
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
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Build history on GunPartPicker
Builders have added the 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 to their builds on GunPartPicker. Since April 2026, it ranks #454 of the 2,053 upper receivers builders have added.
Today the one retailer we track is out of stock. Listed prices start at $469.99 at Optics Planet for when it comes back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
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Build Configuration Breakdown
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