AR Sponsor
Posted: 7/15/2026 3:27:56 AM EDT
|
I have formal .gov SMG training on the MP5 and the UZI. At the time we were taught 2rd burst 2 compressions of the trigger four rounds on target. Historically, there were some machine guns, like the m60 that didn't always work so well with shorter burst. Most of the videos I see of people with frt are mad dumping or doing extended burst. I'd like to know, are they consIstently reliable In short , burst , 2 to 4 rounds? Thx |
Joined:
Jul 2026
Posts:
4
EE: 0% (0)
MO, USA
|
The M60 is kinda weird (flawed, even) in how its trigger group is designed. If you don’t release the trigger quickly (and sometimes even if you do) the sear won’t come up quickly to re-engage, and the bolt can ride over the sear and still be firing another round. This is because the sear on the M60 is directly hinged to the trigger, all the time. It does not “pop up” immediately under spring pressure when the trigger is released past a certain point (unlike most other open-bolt MG sear designs) so that could explain the lack of reliability you’ve seen when attempting to obtain short bursts with an M60. It can generally be overcome by sharply/quickly releasing the trigger all the way, but you’ve got to be really fast in order to immediately obtain full sear engagement. Other models, to include the M240, M249, AUG, G36, MP5, AR, no problem and you can readily obtain whatever round count you want with a bit of practice. The M60 is just extra difficult to accomplish this with. |
|
I have not had any issues with long or short bursts. With the 2 position Arizona Regulator in my 16" rifle gas and rifle stock gun I can easily do singles, doubles or more without issue. The Arc-Fire with a G$ is my favorite though. |
An armed society is a polite society.
|
Originally Posted By Biggus_Dickus: I have multiple brand AR FRTs and a Rare Breed for MP5 in a MAC5. No issues firing short bursts or mag dumps with any of them. The MAC5 (MP5 clone from Turkey) took some tweaking and Genuine H&K parts to be reliable, but that wasnt the FRT causing that. Curious, which parts did you replace? |
Texas beanful chili ambassador
IME they work fine in bursts. Here is one of my rifles with a Partisan Disruptor in it shooting a bunch of bursts. Partisan Disruptor. Reliable. Accurate. Legal #tactical |
|
Originally Posted By Schnitzengruben: Curious, which parts did you replace? Originally Posted By Schnitzengruben: Originally Posted By Biggus_Dickus: I have multiple brand AR FRTs and a Rare Breed for MP5 in a MAC5. No issues firing short bursts or mag dumps with any of them. The MAC5 (MP5 clone from Turkey) took some tweaking and Genuine H&K parts to be reliable, but that wasnt the FRT causing that. Curious, which parts did you replace? |
Member
Joined:
Dec 2023
Posts:
10930
EE: 100% (7)
USA
DTT, SS, AR, and PD all seem to work fine with short bursts IME. The novelty of mag dumps wears away quickly. Getting good and consistent shot placement in short bursts is much harder than I figured it would be. That said, I'm thoroughly enjoying learning and getting better at it. 
|
|
I've all but replaced shooting rapid 2-3rd semi with short 2-3rd bursts with FRT when training at ranges under around 50 yards. Completely reliable. Given how the system functions mechanically, there's absolutely no reason that the length of the burst should have any effect on reliability. It's simply forcing the trigger back into the 'ready to fire' position. Assuming everything is properly set up to enable cyclic rate fire, 2 rounds in semi is going to be just as reliable as 2 rounds in FRT. |
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
IG: @cqbr.kurdt
Looking for: Savannah Mk18 RIS II in light blonde/bronze - LMT SOPMOD Gen 1 Tan - Aimpoint Comp M3 w/ Lens Covers
Member
Joined:
Jun 2022
Posts:
14065
EE: 100% (30)
TX, USA
|
Originally Posted By KitBuilder: The M60 is kinda weird (flawed, even) in how its trigger group is designed. If you don’t release the trigger quickly (and sometimes even if you do) the sear won’t come up quickly to re-engage, and the bolt can ride over the sear and still be firing another round. This is because the sear on the M60 is directly hinged to the trigger, all the time. It does not “pop up” immediately under spring pressure when the trigger is released past a certain point (unlike most other open-bolt MG sear designs) so that could explain the lack of reliability you’ve seen when attempting to obtain short bursts with an M60. It can generally be overcome by sharply/quickly releasing the trigger all the way, but you’ve got to be really fast in order to immediately obtain full sear engagement. Other models, to include the M240, M249, AUG, G36, MP5, AR, no problem and you can readily obtain whatever round count you want with a bit of practice. The M60 is just extra difficult to accomplish this with. And a worn sear can cause a run away machine gun. |
“That’s not how it works. You buy more tools and power than you need and as you fuck everything up you gain the knowledge to become a better carpenter.”
Tveddy
Tveddy
|
Originally Posted By Curmudgeon762: And a worn sear can cause a run away machine gun. |
Member
Joined:
Jun 2022
Posts:
14067
EE: 100% (30)
TX, USA
|
Originally Posted By KitBuilder: Yes, absolutely. Gunners would often cause excess wear on the sear by consistently releasing the trigger too slowly. Then it wears down to the point the bolt slips past it even easier, and yeah eventually it just starts running away if not replaced. I had never been told about run away guns or to just break the belt when it happens. It happened but I kept my cool and the weapon on target on to get yelled at for not using 5-6round bursts 
|
“That’s not how it works. You buy more tools and power than you need and as you fuck everything up you gain the knowledge to become a better carpenter.”
Tveddy
Tveddy
Friendly Neighborhood Extremist
Joined:
Sep 2023
Posts:
664
EE: 100% (2)
KS, USA
AR Sponsor