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"
August 2026 on GunPartPicker
Radical Firearms 5.56 Socom Complete AR-15 Upper - Rpr M-LOK Handguard - 16" ranked #31 of the 690 upper receivers builders added on GunPartPicker in August 2026, behind the PSA 10.5" Pistol Length 300AAC Blackout 1:8 Nitride 9" Lightweight M-LOK Freedom Upper With BCG & CH, with about 1 in every 250 upper receivers added to builds. Down from #18 in June and July. Builds with this upper receiver are nearly all chambered in 5.56 NATO, mostly on mid-length gas (75%, then carbine-length 25%), and nearly all AR-15.
Availability is good: it was in stock at one retailer or another nearly every day in August 2026, and today the one retailer we track has it in stock. Prices barely moved in August 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 August.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 31 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.
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 | $2266.75 |
 | 12 | $1352.28 |
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