Upgrade your AR-15 build with the Dirty Bird AR-15 True Mil-Spec Carbine Receiver Extension / Buffer Kit - H3, engineered for superior reliability and recoil management. Designed for shooters who demand precision and performance, this kit delivers a seamless integration of mil-spec components that enhance cycling efficiency and minimize felt recoil, making it ideal for tactical applications, range sessions, or home defense setups. Key Features True Mil-Spec 6-Position Receiver Extension: Crafted from durable 7075-T6 aluminum for a robust, rattle-free fit that accommodates most carbine stocks. H3 Buffer (5.5 oz): Features one steel weight and three tungsten weights in a machined aluminum body, providing heavier mass to slow bolt carrier velocity and reduce wear on internal components. Carbine Buffer Spring: High-quality spring ensures consistent tension for reliable feeding and ejection across various ammunition types. Castle Nut and End Plate: Secure mounting hardware for easy installation and long-term stability. Made in the USA: Precision-manufactured to meet stringent mil-spec standards, guaranteeing quality and compatibility. Specifications Buffer Weight: 5.5 oz (H3 configuration) Buffer Length: 3.25 inches Receiver Extension Material: 7075-T6 Aluminum Positions: 6 adjustable Kit Weight: Approximately 12 oz Compatibility: Standard AR-15 lower receivers and mil-spec carbine stocks Why Choose This Product In the world of AR-15 accessories, a reliable buffer system is crucial for addressing common pain points like excessive recoil, inconsistent cycling, and premature part wear-especially in overgassed or suppressed setups. The Dirty Bird H3 kit solves these issues by incorporating a heavier buffer that optimizes dwell time, promoting smoother operation and faster follow-up shots. Whether you're tuning a short-barreled rifle for maneuverability or enhancing a full-length build for accuracy, this kit provides the balanced performance needed to elevate your shooting experience without compromising on durability or ease of assembly. Don't settle for subpar components that hinder your build's potential. Equip your AR-15 with the Dirty Bird True Mil-Spec Carbine Receiver Extension / Buffer Kit - H3 today and experience the difference in reliability and control that professional shooters trust. Frequently Asked Questions Q: What makes the H3 buffer different from a standard carbine buffer? A: The H3 buffer weighs 5.5 oz with tungsten weights, compared to the standard 3 oz, which helps reduce bolt carrier speed, lessen recoil impulse, and improve overall system harmony in tuned AR-15 configurations. Q: Is this kit compatible with all AR-15 carbine stocks? A: Yes, its true mil-spec dimensions ensure a secure fit with most aftermarket and OEM carbine stocks, offering 6 positions for customizable length of pull. Q: Will this kit help with suppressed shooting? A: Absolutely-the heavier H3 buffer is particularly beneficial for suppressed AR-15s, as it manages increased backpressure for smoother cycling and reduced gas blowback.