Vltor A5 Buffer and Spring only?

Thanks for the help. I’ll pick up the A5H3 and a rifle spring and run that. I’ll let you know if I have any issues.

You will be fine with the standard rifle spring. I am pretty sure that the spring that Vltor runs in their A5 kits is a Sprinco Green Rifle Spring.

why’s that?

For those who can’t find the A5 Reciever Extension or the whole kit with Buffer and spring…etc. I found mine at on the web at a place called: http://www.alphaops.com

A little more about my experience with them here:
https://www.m4carbine.net/showthread.php?t=71775&page=4

The A5 system uses a standard, milspec rifle spring.

Sorry I thought I read about the Sprinco Spring on Vltors website but after re-checking, you gentlemen are correct. I must have confused a line I read on Sprinco’s website that advised that the Sprinco green rifle spring is compatible with the A5 system.