Details
AR-15 Mil-Spec Buffer Tube Kit - Complete Recoil System
This buffer tube kit delivers the core recoil cycling components every AR-15 build needs. You get a 7075-T6 aluminum tube with dry film coating for smooth operation, a 3oz carbine buffer, and a heat-treated 17-4 PH stainless flatwire spring. The castle nut and end plate complete the assembly, giving you everything required to finish the buffer tube section of your lower receiver.
Key Features
- 7075-T6 aluminum tube with Type III hardcoat anodize and dry film coating
- 3oz standard carbine buffer for mil-spec cycling
- Heat-treated 17-4 PH stainless flatwire spring, corrosion resistant
- Includes castle nut and end plate
- Compatible with AR-15 carbine-length buffer tube configurations
Perfect For
- Builders completing a lower receiver assembly
- Replacement buffer systems for existing AR-15s
- Budget-conscious builds requiring reliable mil-spec components
- Anyone needing a straightforward recoil solution without premium features
Material Quality and Durability
The 7075-T6 aluminum tube is one of the strongest aluminum alloys available for firearms components. Dry film coating reduces friction during cycling while protecting against corrosion, which means smoother operation and longer service life compared to uncoated tubes. The Type III hardcoat anodize adds a second layer of protection.
Spring and Buffer Performance
The flatwire spring design distributes force more evenly than traditional coil springs, reducing wear on components over time. Heat-treated 17-4 PH stainless steel maintains its strength through thousands of cycles. The 3oz buffer is standard for carbine-length systems and works with typical mil-spec lower receivers without requiring adjustments.
What You Need to Know
This kit includes the buffer tube, buffer, spring, castle nut, and end plate. It does not include the lower parts kit or upper assembly. The components are mil-spec compatible, meaning they work with standard AR-15 lower receivers. Dry film coating requires minimal maintenance compared to wet lubricants, which can attract dust and debris.
Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws.
