Radical Firearms 5.56 Socom Complete AR-15 Upper - Rpr M-LOK Handguard - 16"
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Radical Firearms
Overview
The Radical Firearms 5.56 Socom Complete AR-15 Upper is a fully assembled upper receiver designed for ease of installation and performance. Featuring a 16-inch barrel with a 1:7 twist rate, this upper is optimized for stabilizing a wide range of bullet weights, making it versatile for various shooting applications. It includes an RPR M-Lok handguard for enhanced modularity and accessory attachment, and it's built from durable 7075-T6 aluminum, ensuring a robust and lightweight platform. This upper is commonly found in builds that utilize a mid-length gas system, making it an excellent choice for reliable cycling and enhanced shootability.
Specifications
Radical Firearms 5.56 Socom Complete AR-15 Upper - Rpr M-LOK Handguard - 16"
Available Merchants(1)
Prices checked
Price Alert
October 2026 so far on GunPartPicker
Radical Firearms 5.56 Socom Complete AR-15 Upper - Rpr M-LOK Handguard - 16" is the fourth most added upper receiver on GunPartPicker so far in October 2026, behind the PSA AR-15 Upper 5.56 16" Mid-Length Nitride 13.5" M-LOK - 5165448513, with about 3% of all upper receivers added to builds. Up from #10 in September. Builds with this upper receiver are nearly all chambered in 5.56 NATO, mostly on mid-length gas (67%, then carbine-length 22%), and nearly all AR-15.
Availability is good: it was in stock at one retailer or another nearly every day in September 2026, and today the one retailer we track has it in stock. Prices barely moved in September 2026, holding around $399.99, so there haven't been real sales lately. Buying today, the lowest price is $399.99 at Primary Arms, which matches the best price we saw in September.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
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Frequently Built With
The part most often added in each category by hundreds of builds that include this one
Smith & Wesson M&P15 Complete Lower 5.56x45mm/.223 Remington, Black - 812002
Radian Raptor Charging Handle & Talon Safety Selector Combo - OD Green
Rise Armament Super Sporting AR15/10 Single Stage Trigger - Flat - Dtom Special Edition
Cryptic Coatings 5.56 NATO AR-15 Bolt Carrier Group - Mystic Bronze
Magpul AFG-2 Angled Fore Grip - Black
Magpul AR-15 MOE Stock Collapsible Mil-Spec Black
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.
Builds Featuring This Part
See all 2 →Builds in the community that include the Radical Firearms 5.56 Socom Complete Ar-15 Upper - Rpr M-Lok Handguard - 16"
| Build | Parts | Total |
|---|---|---|
 | 22 | $2246.83 |
 | 12 | $1635.80 |
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