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AR15.COM
8/1/2026 8:19:16 AM EDT
Have a 12" LT 5.56 OBR.

What buffer/spring for it to run smoothly with an FRT?
"Instead of making people sick, this virus had made people retarded."
-beardog30 4/22/20

Tennessee Squire

????
8/1/2026 8:43:33 AM EDT
[#1]
Probably an h3, does it have an agb?
8/1/2026 9:39:35 AM EDT
[#2]
Yes
"Instead of making people sick, this virus had made people retarded."
-beardog30 4/22/20

Tennessee Squire

????
8/1/2026 6:08:42 PM EDT
[#3]
i use a standard spring with an H2 and havent had any issues but i dont have more than a few hundred rounds through it currently.
8/1/2026 6:15:16 PM EDT
[#4]
H3 buffer with a standard milspec spring is recommended. Make sure it has reciprocating weights, some of the cheap ones are solid and will not prevent bolt bounce.
8/1/2026 9:38:22 PM EDT
[#5]
I am using standard springs in both standard carbine and A5 extensions, with one(the 556) running H2, and the other(300blk BCM) the factory mk2 buffer which is a zero or 1.....Id have to check.
8/2/2026 4:53:03 PM EDT
[#6]
Originally Posted By Kujoe:
Have a 12" LT 5.56 OBR.

What buffer/spring for it to run smoothly with an FRT?
View Quote


Everywhere I've seen they recommend either an H2 or an H3.
The 2nd is not about hunting, it never was. It was put in place for one reason and one reason only. You can't have them, we won't give them up, so get over it.

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