Colt M4/AR15 Carbine Buffer Action Spring

Fast turn around quick and easy.

Colt brand named buffer spring. The buffer spring is probably the cause of almost all issues with any AR type rifle. They need replaced often(every 5k to 10k). There are many out there but so cheap, spend the extra dollar and get the colt brand name.

Fit and function is perfect. Will be purchasing again for my next build.

Sure. You could pay 3.99 for a spring of questionable quality. But why not go with a solid brand and pay a few bucks more?

I like Colt parts and AU is my go to source

As always, great service from AU!

great product good price, will shop again

I replaced my AR15 buffer spring with the Colt buffer spring and very happy with great quality and at a great price, will definitely be ordering more for future builds or to have as spares.