Luth-AR .308 Carbine Buffer Spring for AR-10/LR308 Rifles

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3.8 oz buffer

Luth-AR .308 Carbine Buffer for AR-10/LR308 Rifles - 3.8 oz


3.8 oz buffer

Luth-AR .308 Carbine Buffer for AR-10/LR308 Rifles – 3.8 oz

.308 Buffer Spring for AR-10 Style Rifles

An important thing to note when you’re building an AR-10 is that your buffer spring is not interchangeable with an AR-15.  .308 buffer springs still fit inside the standard carbine buffer tube, but the length needs to be reduced to make the system reliable with the longer AR-10 bolt carrier.

This carbine buffer spring from Luth-AR has the proper length and number of coils to keep your AR-10 build up and running.  Match this spring with the Luth-AR .308 carbine buffer for a complete package that won’t let your battle rifle down.


  • Material: Tempered Spring Steel
  • Weight 1.4 oz
  • Length: 9-3/4″
  • Coils : 24.5
  • For AR-10 Style Rifles with Carbine Buffer Tube

Have Questions About this Product?

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.

Luth-AR Limited Warranty

  • Luth-AR, LLC manufactured products are warranted for 1 (one) year from the date of purchase against manufacturing defects in material and/or workmanship. All parts and labor or replacement, at our option, are covered.
  • Government fees, damage caused by failure to perform normal maintenance, sales outside the United States, damage due to high velocity, high pressure, reloaded, or other non-standard ammunition, or any unauthorized repair, modification, misuse, abuse, or alteration of the product is not covered by this limited warranty.
  • Consumable items such as gas rings, O’ rings, etc., are not warranted.
  • Luth-AR, LLC complete assembled uppers will be warranted for a period of 1 (one) year after the complete upper was purchased.
  • The warranty applies towards defects in materials or workmanship of the complete upper. Luth-AR will pay for all warranty repairs, at no charge to the consumer. Please supply a copy of the invoice for proof of purchase.
  • The use of re-load ammunition, proof rounds, or factory ammunition that exceeds initial SAAMI specifications voids any warranty. Any repairs or modifications not done by Luth-AR also voids any warranty.
  • Complete uppers not assembled or built by Luth-AR are not covered by the 1 (one) year warranty.
  • Please call our warranty department at (763) 263-0166 or email for any warranty issues.

Disclaimer: Manufacturer’s warranty is subject to change without prior notice.