Dirty Bird AR-15 True Mil-Spec Carbine Receiver Extension / Buffer Kit - H2 - D255

Upgrade your AR-15 build with the Dirty Bird AR-15 True Mil-Spec Carbine Receiver Extension / Buffer Kit – H2, the ultimate solution for reliable performance and reduced recoil. Engineered for precision and durability, this kit delivers military-grade components that ensure smooth cycling and enhanced control, whether you’re building from scratch or fine-tuning an existing rifle. Perfect for shooters seeking a balanced system that handles high-round counts with ease.

Key Features

• True Mil-Spec 6-Position Receiver Extension: Machined from American-made 7075-T6 aluminum for superior strength and compatibility with standard AR-15 stocks, allowing seamless adjustments for optimal fit.
• H2 Heavy Buffer (4.6 oz): Features one steel weight and two tungsten weights to slow bolt carrier velocity, minimizing over-gassing and felt recoil for a smoother shooting experience.
• Mil-Spec Carbine Buffer Spring: Provides consistent tension for reliable feeding and ejection, reducing wear on internal components over time.
• Hardened Steel Castle Nut with Staking Cuts: Ensures secure assembly that withstands rigorous use without loosening.
• Mil-Spec End Plate: Simple yet robust design for easy installation and long-term stability.

Specifications

• Weight: 11.84 oz
• Length: 13.1 inches
• Width: 6.4 inches
• Height: 1.9 inches
• Buffer Weight: H2 (4.6 oz with tungsten/steel weights)
• Material: 7075-T6 Aluminum (Receiver Extension), Hardened Steel (Castle Nut and Buffer Weights)
• Compatibility: Standard AR-15 lower receivers and Mil-Spec stocks

Why Choose This Product

The Dirty Bird H2 Buffer Kit addresses common AR-15 pain points like excessive recoil and inconsistent cycling, especially in adjustable gas block setups or shorter barrels. By incorporating an H2 buffer, it helps tune your rifle for optimal performance, reducing bolt bounce and improving accuracy during rapid fire. Built to mil-spec standards, this kit offers exceptional value without compromising on quality, making it ideal for tactical enthusiasts, competitive shooters, and home defenders who demand reliability from their firearms accessories.

Don’t settle for subpar components—equip your AR-15 with the Dirty Bird True Mil-Spec Carbine Buffer Kit today and experience the difference in control and confidence on the range.

Frequently Asked Questions

What makes the H2 buffer different from a standard carbine buffer?

The H2 buffer is heavier at 4.6 oz, using tungsten and steel weights to slow the bolt carrier’s rearward movement. This reduces felt recoil and helps manage over-gassed systems, leading to more reliable function compared to the lighter 3 oz standard buffer.

Is this kit compatible with all AR-15 stocks?

Yes, the true mil-spec 6-position receiver extension ensures compatibility with most standard AR-15 carbine stocks, providing a secure and adjustable fit for personalized setups.

What types of AR-15 builds benefit most from an H2 buffer kit?

This kit excels in builds with mid-length or pistol gas systems, shorter barrels (10-14.5 inches), or suppressed configurations, where additional weight helps balance gas pressure for smoother operation and extended component life.