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
Build history on GunPartPicker
Builders have been adding 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 February 2026. All time, it ranks #317 of the 1,633 upper receivers builders have added.
Availability is good: it was in stock at one retailer or another nearly every day in August 2026, but today the one retailer we track is out of stock. Prices barely moved in August 2026, holding around $469.99, so there haven't been real sales lately. 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 35 retailers
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Build Configuration Breakdown
Aggregated and anonymized data showing how builders use this product
Gas SystemBased on real build data showing which gas system lengths builders use with this product.
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