AT3™ Mil Spec Buffer Tube Kit For AR-15 – 9 Colors Available

The perfect kit for your next build – at a price that can’t be beat.

This Mil-Spec AR-15 Buffer Tube Kit includes the buffer tube, castle nut, lock plate, 3oz carbine recoil buffer and recoil spring. All parts are designed for easy assembly and compatibility with all your other AR-15 components.  And if you want to get a custom look for your gun, we offer an array of Cerakote finish options to match the buffer tube, castle nut, and endplate.

This kit and its components are backed by the AT3 Lifetime Warranty for guaranteed function.  AT3 cannot warranty against Cerakote™ inconsistencies or the wearing of coatings over time.

Included in the kit

• 6 position Mil-Spec buffer tube
• 3oz carbine recoil buffer with T6 anodized aluminum body
• Steel Buffer Spring
• Steel castle nut
• Steel end plate

Specifications

• Buffer Tube Diameter: 1.146″ (Mil Spec)
• Buffer Tube Length: 7 1/4″
• Buffer Tube Thread type: 1 3/16-16 UN-3B SPECIAL
• Buffer Tube Material: 6061-T6 Aluminum
• Spring Type: Carbine length, black coated
• Castle nut material: Steel
• End plate material: Steel
• Recoil spring type: Steel
• Finish
  • Black: Hardcoat Anodized
  • Flat Dark Earth: H-267 Magpul® Flat Dark Earth
  • OD Green: H-232 Magpul® OD Green
  • Pink: H-224 SIG™ Pink
  • Red: H-167 USMC Red
  • Blue: H-171 NRA Blue
  • Burnt Bronze: H-148 Burnt Bronze
  • Tungsten: H-237 Tungsten
  • Titanium: H-170 Titanium
• Buffer type: 3oz weight, carbine style