Davidson Defense Mil-Spec AR-15 Buffer Tube Kit with 3oz Buffer, Recoil Spring, Castle Nut & End Plate

AR-15 Mil-Spec Buffer Tube Kit

The Davidson Defense AR-15 Mil-Spec Buffer Tube Kit includes everything needed to complete your buffer system. This kit combines a 7075-T6 aluminum buffer tube with dry film coating, a 3oz carbine buffer, carbine recoil spring, castle nut, and end plate. All components are mil-spec rated and finished in black phosphate, designed for reliable cycling and consistent performance across standard AR-15 platforms.

Key Features

• 7075-T6 aluminum buffer tube with Type III hard coat anodized finish and dry film lubrication
• 3oz carbine buffer for standard AR-15 cycling
• Carbine recoil spring engineered for mil-spec AR-15 platforms
• Mil-spec castle nut and phosphate-finished end plate included
• Complete buffer system components ready to install

Perfect For

• Builders completing AR-15 lower receivers
• Shooters replacing worn buffer system components
• Standard carbine length AR-15 builds
• Budget conscious builds requiring reliable mil-spec parts

Mil-Spec Buffer System Reliability

The 7075-T6 aluminum construction provides durability and consistent performance across thousands of rounds. Dry film coating reduces friction without requiring regular lubrication, simplifying maintenance. The 3oz buffer weight pairs with the carbine recoil spring to deliver predictable cycling on standard AR-15 platforms. This combination maintains proper bolt carrier group velocity and reduces felt recoil impulse compared to heavier buffer setups.

What Makes This Kit Complete

All components arrive ready for installation into your lower receiver. The castle nut and end plate secure the buffer tube to your receiver extension, while the buffer and spring handle recoil management. This is a true mil-spec kit, meaning every component meets military specifications for reliability and durability in demanding conditions.

Buffer System Compatibility Notes

This kit is designed specifically for carbine length AR-15 platforms. The 3oz buffer and carbine spring combination works with standard receiver extensions and mil-spec lower receivers. If you're building a rifle length AR-15 or using a different receiver extension type, verify compatibility before purchasing.

Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws. Lower receiver not included.