This is a complete stock kit for AR-15 and M16 platform builds, centered on an M4 style adjustable carbine buttstock in flat dark earth reinforced polymer with a 6-position adjustable length of pull and Mil-Spec carbine receiver extension compatibility. The kit includes a Mil-Spec heavy-duty AR-15 6-position carbine buffer tube, an AR-15 9mm carbine buffer, a standard AR-15 carbine recoil spring made in the USA, a US Tactical AR-15 and M16 Mil-Spec receiver end plate, and a Mil-Spec AR-15 carbine castle nut, covering the full rear hardware group in one package. The 9mm carbine buffer makes this kit a well-suited rear hardware solution for AR-9 and pistol caliber carbine builds on the Mil-Spec carbine buffer tube platform.
The M4 style adjustable carbine buttstock in flat dark earth reinforced polymer fits directly onto Mil-Spec carbine receiver extensions and offers a 6-position adjustable length of pull locked in place by a spring-loaded adjustment lever. The low-profile and lightweight design keeps the rear end trim without adding unnecessary bulk to the build. The textured non-slip buttplate provides a consistent and secure shoulder contact surface, and the integrated sling loop covers sling attachment at the rear end without additional hardware. The Mil-Spec heavy-duty 6-position carbine buffer tube pairs directly with the stock and accepts the AR-15 9mm carbine buffer and standard AR-15 carbine recoil spring made in the USA as part of the complete rear hardware group. The 9mm carbine buffer is the correct buffer choice for AR-9 and pistol caliber carbine platforms on the Mil-Spec carbine buffer tube, addressing the heavier buffer weight requirement of blowback-operated 9mm builds. The US Tactical AR-15 and M16 Mil-Spec receiver end plate and Mil-Spec AR-15 carbine castle nut complete the rear hardware set, locking the buffer tube down at the lower receiver and giving the builder everything needed from the lower receiver rearward in one kit.
Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws.
Platform Compatibility: AR-15 / M16
Stock Type: M4 Style Adjustable Carbine Buttstock
Stock Material: Reinforced Polymer
Stock Color: Flat Dark Earth (FDE)
Length of Pull: 6-Position Adjustable
Buffer Tube Compatibility: Mil-Spec Carbine Receiver Extensions
Buffer Tube: Mil-Spec Heavy-Duty AR-15 6-Position Carbine Buffer Tube
Buffer Weight: AR-15 9mm Carbine Buffer
Buffer Spring: Standard AR-15 Carbine Recoil Spring, Made in the USA
Receiver End Plate: US Tactical AR-15/M16 Mil-Spec Receiver End Plate
Castle Nut: AR-15 Mil-Spec Carbine Castle Nut
Locking System: Spring-Loaded Adjustment Lever
Buttpad: Textured Non-Slip Buttplate
Sling Attachment: Integrated Sling Loop
Weight: Lightweight Design
Application: Tactical, Sporting, and General-Purpose AR-15 Builds
Features: Durable Polymer Construction, Adjustable Length of Pull, Ergonomic Profile, Low-Profile Design, Lightweight Configuration, Secure Lockup, Mil-Spec Compatible
Check out our Shipping and Processing Times Check out our Warranty/Returns and Terms and Conditions Check out our State Restrictions page