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8/12/2026 1:12:52 PM EDT
Or will it run with a standard H1 carbine buffer?

I don't own one and wont buy one but I'm curious as I don't see a H3 buffer requirement mentioned on their website.

https://rarebreedtriggers.com/product/frt-15l3-2/

Fuck Rare Greed!
8/12/2026 1:17:20 PM EDT
[#1]
I use the KAK FRT BCG and a standard carbine buffer.

8/12/2026 1:31:43 PM EDT
[#2]
Typically at least a H2 is what you need to reliably prevent bolt bounce. That doesn't mean a H1 definitely won't work, there's just a decent chance you might get an occasional stoppage due to bolt bounce in FRT mode.
8/12/2026 1:39:46 PM EDT
[#3]
Quote History
Originally Posted By mak0:
Typically at least a H2 is what you need to reliably prevent bolt bounce. That doesn't mean a H1 definitely won't work, there's just a decent chance you might get an occasional stoppage due to bolt bounce in FRT mode.
View Quote


This is correct - there is nothing unique about the RB that makes it immune to bolt bounce.
8/12/2026 1:44:38 PM EDT
[#4]
I put a rare breed and an h2 in a friend's Ruger and it ran fine. I put a partisan and standard buffer in an m and p and it ran fine. I have a rare breed in a mutt gun but have struggled with all the different weights
8/12/2026 1:46:44 PM EDT
[#5]
I started using a standard 3 oz buffer it worked for about a 3 round burst, then would choke up. Then I went to the Geissele Super 42 spring with the 42 buffer, perfection.
8/12/2026 8:39:51 PM EDT
[#6]
My Rare Breeds need H2 at least. They exhibited carrier bounce with standard carbine and H1 buffers.
I don't see no Americans. I see trespassers.
8/13/2026 6:13:36 AM EDT
[#7]
Thanks all.
8/14/2026 1:37:51 AM EDT
[#8]
I haven't done the test with the FRT-15L3 yet, but with the FRT-15C3, in a brand new PSA PA15, the FRT-15C3 works fine with the stock CAR buffer that comes in the gun. It also works with an H, H2, and H3 buffer, but all those seemed to do was increase felt recoil.

Granted, this was with a brand new gun. After the gun breaks in a bit the situation could change. Hope this helps.
8/14/2026 9:45:51 PM EDT
[#9]
Depends on your setup. I have a 10.3” suppressed that needs a H3, my go-to suppressed 14.5” midlength uses a Geissele H2, an unsuppressed Bushmaster 14.5” M4 that uses an H1…

Just have to bring a bunch of buffers to the range if you can and see how it runs.
Did 4 tours of the Cola Wars
8/14/2026 10:31:54 PM EDT
[#10]
Mine will not run with regular buffer. Runs great with H2
8/15/2026 10:37:24 PM EDT
[#11]
Well yes and no, bolt bounce is the enemy of getting any FRT to run. Most people end up with a H2 or H3 buffer though because it just works..

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