Expo Arms AR-15 Carbine Length Buffer Spring

Manufactured by Expo Arms
Manufactured by Expo Arms
7 Reviews

In Stock

Standard orders will ship out the same business day if ordered by 3:30 pm CST. FFL orders will ship within 5 business days or less as long as we have the information for the transfer destination.



Whether for a brand-new build, as a replacement component, or to keep on hand as a spare, the Expo Arms Carbine Length Buffer Spring will not let you down. Crafted from music wire, this action spring is designed for use with AR-15 carbine length receiver extensions.

  • Carbine length
  • Made from music wire
  • Proudly made in the U.S.A.
See More


BrandExpo Arms
MaterialPiano Wire
TypeAction Spring - Carbine Length

WARNING: This Product can expose you to chemicals which is known to state of California to cause Cancer and Reproductive Harm. For more information, see www.p65warnings.ca.gov

Ratings & Reviews

7 reviews



by -

Works perfectly fine compared to other high dollar brands.

Awesome product

by -

Work Wonderful

Highly recommend

by -

great spring! you can tell the quality over the stock spring.

cheap but still no

by -

It's trash. Installed load is less than even a worn out spring is expected to be at 6lb 8oz. I expect a new spring to be around 8-9lbs. I'm basing this expert opinion off of tubbs information, and personally measuring installed load of a dozen other springs ranging from 6lbs to 9lbs.

Gets the job done

by -

The cheap and best item which gets the job done. Have to check the durability.

Decent Price Product

by -

Decent Price Product - Reliable and durable

The best Mil-Spec spring


These run quieter, softer, and last much longer than a standard round wire spring. Best mil-spec alternative currently on the market.