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Wilson Combat Mil-Spec AR-15 Carbine Buffer Tube Kit
Upgrade your AR-15’s recoil system with Wilson Combat’s precision-machined carbine buffer tube kit. Designed for reliability under rapid fire and harsh conditions, this Mil-Spec kit ensures consistent cycling whether you’re at the range or in the field. Compatible with most collapsible stocks, it’s a straightforward retrofit for builders prioritizing function over flash. Ships discreetly nationwide—no FFL required.
Key Specifications
- Material: 7075-T6 aluminum buffer tube (Type III hardcoat anodized)
- Includes: Buffer tube, castle nut, end plate, carbine buffer spring, H2 buffer (4.6 oz)
- Finish: Matte black, corrosion-resistant
- Compatibility: Mil-Spec carbine stocks (commercial tubes not supported)
- Weight: 8.2 oz (complete kit)
Built for Performance
The buffer tube’s 7075-T6 aluminum construction withstands repeated impacts without deformation, a critical factor for high-volume shooters. Unlike cheaper 6061 aluminum alternatives, this alloy maintains dimensional stability even under sustained fire. The H2 buffer balances recoil mitigation with reliable cycling, reducing muzzle climb in carbine-length gas systems.
Wilson Combat’s Type III anodizing exceeds standard Mil-Spec requirements, providing wear resistance against collapsible stock adjustments. The matte finish eliminates glare—a practical detail for low-light scenarios. Every component is machined to tight tolerances, ensuring smooth interaction with your lower receiver and stock hardware.
This kit skips unnecessary frills like decorative engravings or colored accents. The focus is on mechanical precision: the castle nut and end plate feature positive staking notches to prevent loosening under recoil. Installers will appreciate the clean threading and crisp machining that prevents tool slippage during assembly.
Included components are matched as a system. The carbine spring and H2 buffer weight are tuned to work in harmony with the tube’s internal dimensions, reducing the need for trial-and-error tuning. Whether running suppressed or with hotter loads, the kit maintains reliable bolt carrier group timing.
Compatibility Notes
- Fits Mil-Spec carbine stocks (Magpul CTR, B5 SOPMOD, etc.)
- Not compatible with commercial-spec tubes or fixed stocks
- Designed for carbine-length buffer systems (not pistol or rifle-length)
- Check lower receiver thread alignment if using with aftermarket receivers
Installation Overview
Basic assembly requires an AR-15 armorer’s wrench and vise block. The buffer tube threads directly into the lower receiver, with the end plate securing the takedown detent spring. Wilson Combat recommends staking the castle nut after torqueing to 35 ft-lbs. The included H2 buffer and spring drop into the tube before stock attachment—no specialized tools needed.
FAQ
Q: Does this work with pistol braces?
A: No. This kit is designed for carbine-length buffer systems and requires a Mil-Spec collapsible stock.
Q: Is the H2 buffer suitable for mid-length gas systems?
A: Yes, though some users may prefer a lighter buffer (H1) depending on ammunition and gas port size.
Q: Can I reuse my existing buffer spring?
A: Possible, but Wilson Combat’s included spring is matched to the H2 buffer for optimal performance.
Q: Does the tube include QD sling mount points?
A: No. The end plate has a standard sling loop; aftermarket plates with QD sockets can be substituted.
Q: Will this fit a .308 AR platform?
A: No. AR-15 carbine buffer systems differ from AR-10/LR-308 designs.
Warranty & Shipping
Wilson Combat backs this kit with a lifetime warranty against manufacturing defects. All orders ship within 1 business day via USPS or UPS (selectable at checkout). No FFL transfer required—ships directly to your door in unmarked packaging. Continental US only.
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