Radical Firearms AR-15 M4 Mil-Spec Stock
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Radical Firearms
Overview
The Radical Firearms AR-15 M4 Mil-Spec Stock is a collapsible stock designed to provide a secure and adjustable fit for your AR-15 platform. Featuring a Mil-Spec tube specification, it ensures compatibility with a wide range of buffer tubes while allowing for quick length adjustments to accommodate different shooting styles or user preferences. This stock commonly appears in builds utilizing a carbine gas system and chambered in .223 Wylde, making it a practical choice for those looking to enhance their rifle's versatility.
Specifications
Build history on GunPartPicker
Builders on GunPartPicker first added the Radical Firearms AR-15 M4 Mil-Spec Stock to a build in February 2026.
It was out of stock everywhere we track for all of August 2026, and today the one retailer we track is out of stock. Listed prices start at $18.99 at Primary Arms for when it comes back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 35 retailers
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Frequently Built With
The part most often added in each category by the 4 builds that include this one
Zro Delta AR-15 Fire Control Group Laser Cut Disconnector
BLEM PSA AR-15 Lower Safe/Fire
V Seven Weapon Systems AR-15 Ultra-Light Magazine Catch Black Diamonds
Yankee Hill Machine AR-15 Charging Handle
PSA AR15 Bolt Catch
WMD Guns M16 NIB-X® Bolt Carrier Group W/ Hammer
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