The Primary Weapons Systems A5 Enhanced Buffer Tube A5H2 Buffer Spring kit is built for shooters who want smoother cycling and consistent performance from their AR-15 platform. Using the A5-length system, this kit pairs a mil-spec 7075-T6 aluminum buffer tube with an A5H2 5.4 oz buffer and heavy spring to help reduce felt recoil and bolt carrier velocity while maintaining reliable operation across a wide range of setups.

This A5 system is ideal for AR-15 and M4 builds that prioritize controllable recoil and dependable function, whether you are spending long days at the range, training, or refining a duty-style carbine. The extended tube and tuned buffer components support improved gas management and reduced parts wear, making the kit a smart upgrade for suppressed rifles or carbines with carbine and pistol-length gas systems. Backed by Primary Weapons Systems’ reputation for thoughtful engineering and durable construction, this buffer tube kit offers a refined, purpose-built solution for modern AR platforms.

• Manufacturer: Primary Weapons
• Model: A5 Enhanced Buffer Tube Kit A5H2 Buffer Spring (EBTA5KIT)
• System Length: A5
• Buffer Weight: H2, 5.4 oz
• Buffer Tube Type: Mil-Spec 7075-T6 Aluminum, Anodized
• Included Components: A5 Buffer Tube, A5H2 Buffer, Heavy Spring
• Primary Use: Range, Training, Suppressor-Friendly Builds