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7/28/2026 9:24:15 PM EDT
[Last Edit: Retroguy2][Edited]
As I finish my M16A2, RO727, RO635SD, M16A4 & GAU-5A ASDW, I might get a bug up my butt to "duplicate" the Burst option in these rifles/carbines.

Of the FRTs on the market, which is held as the "best" option to give a 3 round burst mode?

Hope readers do not get offended.
7/28/2026 9:35:50 PM EDT
[#1]
Spring assisted FRTs can be overpowered if you monkey the trigger. The Cassette trigger variants. Super safeties are pretty sturdy unless its the atrius. That thing will snap if you monkey the trigger.
7/28/2026 10:57:16 PM EDT
[Last Edit: 135Patriots][Edited] [#3]
Arcfire.

Edit: I’m an idiot and didn’t read closely, Arcfire does not have a provision for 3 round burst…but I still think it’s the best, most robust option to date.
7/28/2026 11:37:43 PM EDT
[#4]
Arcfire V1/V2 is the best FRT in my opinion. If you want burst, I guess the "CARL" is the best route to go? I don't honestly know that much about it, but I gather it'll give you burst.

Practice, the master of all things. - Augustus
IG: @cqbr.kurdt
Looking for: Savannah Mk18 RIS II in light blonde/bronze - LMT SOPMOD Gen 1 Tan - Aimpoint Comp M3 w/ Lens Covers
7/29/2026 7:02:05 AM EDT
[#5]
Quote History
Originally Posted By krdt:
Arcfire V1/V2 is the best FRT in my opinion. If you want burst, I guess the "CARL" is the best route to go? I don't honestly know that much about it, but I gather it'll give you burst.

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7/30/2026 7:40:47 AM EDT
[Last Edit: ELittlefield][Edited] [#6]
I own at least one of pretty much AR15 FRT out there, and in my opinion the AS Designs ARC-Fire is the best one out there. That will run you about 200-250 dollars. Then if you want a 3 round burst mechanism, another 145 bucks for the Stuff and Things CARL will give you that ability. I own three of that exact combination, for my M16A4, M16A2, and M4 Carbine BURST marked clones.

You will probably need to tinker with your buffer, the most foolproof way to start out with a good buffer is to use a true H3, which has an aluminum body and three sliding tungsten weights.

The CARL may need some tweaking. Of my three CARLs, only one dropped in and worked immediately. Of the other two, one needed the disconnectors to be polished around the edges, and the other was consistently having first round light strikes, so I addressed that with an extra length firing pin intended for 7.62x39 ammo with harder primers.

https://activesafetydesigns.com/ar15/arc-fire-trigger-v2-non-ambi-kit-0-90-180/

https://stincusa.com/product/cam-activated-reset-limiter-for-super-safeties
I don't see no Americans. I see trespassers.

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