AT3™ Mil Spec Buffer Tube Kit For AR-15 – 7 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
• Buffer Tube Finish: Black Anodized or Cerakote™
• Spring Type: Carbine length, black coated
• Castle nut type: Steel with phosphate or Cerakote™ finish
• End plate type: Steel with phosphate or Cerakote™ finish
• Recoil spring type: Steel
• Buffer type: 3oz weight, carbine style

The AT3 Tactical store has a 90 day no-hassle return policy for products in good condition. You can view the full details of our return policy here.

If you encounter an issue or defect with a product after 90 days of your purchase, you can refer to the manufacturer for a warranty claim. Their policies are below.

All AT3 Tactical Brand Products carry a lifetime warranty against manufacturer’s defects.

This includes AT3 Red Dot Sights, Handguards, Iron Sights, and any other product that carries the “AT3 Tactical” or “AT3™” name. For other brands (ex. Magpul or Troy), please refer to the manufacturer’s warranty policy.

In the event that your AT3™ product becomes unusable, we will repair or replace the product at no charge to you.

If we cannot repair your product, we will replace it with a product in perfect working order of equal or better physical condition. The warranty is fully transferable, but we may require information about the original purchase to validate the authenticity of the product.

If your product is in need of warranty service, please contact AT3 Tactical to start the process

Our contact info is available here. To expedite processing, please provide your order information and description of the defect.

Please note: The AT3 Lifetime Warranty does not cover loss, theft, intentional damage or cosmetic damage that doesn’t affect the performance of the product.