AR 15 trigger question

[hotrail]

Have a Sig M400 Enhanced. I was not happy with the stock trigger (mil spec) so I replaced it with the ALG "Advanced Combat Trigger" which is billed as a mil spec trigger, but smoother/cleaner break. It does feel better but trigger pull is still very heavy.

So before I spend $200 on a new trigger, I thought I would try the JP Enterprises "yellow" trigger and hammer spring set, which they bill as "reduced power" and they caution that with cheap import ammo, or if your primers are not fully seated, may result in light strikes and FTF.

I installed the JP springs tonight. Only issue is that the JP disconnector spring looked substantially longer than the disconnector spring that was supplied with the ALG trigger. The trigger and hammer springs looked like standard AR-15 parts, painted yellow. So I used the trigger and hammer spring but did not swap out the disconnector spring. The trigger does feel noticeably lighter now. Probably still 4-5 pounds, as they advertise, but I don't have a guage to measure it.

So now I have the ALG "Advanced Combat Trigger" with the JP Ent. yellow trigger & hammer spring and the ALG disconnector spring. Is there any reason this will not work? I function checked it and it fires and resets correctly. Just curious if that disconnector spring could cause me any problem.

[Ishooter]

I use JP springs and polished the Anderson trigger and it's about 3.5 lbs. Had no issues. The only way to know is to shoot it.

[foxtrotuniformlima]

I don't see how the disco spring will cause any problems but I am curious why you didn't replace it. All 3 springs work together to give you a lighter pull, not just one.

[Munny$hot]

If its a HD gun stay with the ACT/MilSpec trigger.

[uechikid]

Hiperfire has several replacement triggers for around $100. They also have some high end triggers that start at $179 and up. They are worth looking into.

https://www.hiperfire.com

[Click Boom]

Have a Sig M400 Enhanced. I was not happy with the stock trigger (mil spec) so I replaced it with the ALG "Advanced Combat Trigger" which is billed as a mil spec trigger, but smoother/cleaner break. It does feel better but trigger pull is still very heavy.

So before I spend $200 on a new trigger, I thought I would try the JP Enterprises "yellow" trigger and hammer spring set, which they bill as "reduced power" and they caution that with cheap import ammo, or if your primers are not fully seated, may result in light strikes and FTF.

I installed the JP springs tonight. Only issue is that the JP disconnector spring looked substantially longer than the disconnector spring that was supplied with the ALG trigger. The trigger and hammer springs looked like standard AR-15 parts, painted yellow. So I used the trigger and hammer spring but did not swap out the disconnector spring. The trigger does feel noticeably lighter now. Probably still 4-5 pounds, as they advertise, but I don't have a guage to measure it.

So now I have the ALG "Advanced Combat Trigger" with the JP Ent. yellow trigger & hammer spring and the ALG disconnector spring. Is there any reason this will not work? I function checked it and it fires and resets correctly. Just curious if that disconnector spring could cause me any problem.

The problem with that setup is the lock time is just incredibly slow.

Good triggers are worth it. Just got a SSA-E, got a MBT on the way.

My ALG trigger with JP yellows was no better than my psa triggers with JP yellows.

[Meety Peety]

Until recently, I had two rifles with ALG ACTs in them, one has a full set of JP yellow Springs and the other had just a JP trigger spring. I had read that light strikes could occur so I wanted to try both. FWIW, never had a light strike on either rifle, but the rifle with only trigger spring swapped did feel a bit heavier. I eventually swapped it out for a velocity 3# drop in unit that I had no other use for. And now have an extra ALG sitting around instead that I will probably put in an upcoming pistol build. I have no complaints to with the ALG at all, and for the price it is hands down the best option out there IMO. the only reason I swapped one of mine is that I bought a geissele national match trigger for the Grendel and ended up with the Velocity trigger just sitting in the parts bin, which feels just as smooth and crisp as the ALG but is significantly lighter in pull.

[hotrail]

The problem with that setup is the lock time is just incredibly slow.

Can you elaborate on that? Do you mean its slow because I did not also use the JP disconnector spring? Or just the combo of the ALG ACT and JP springs in general?
Thanks

[ScottsBad]

When I first started building ARs I tried trigger polishing and lighter springs to get lighter and smoother trigger action. But I became concerned that I could potentially create a dangerous situation as the triggers began to wear. In addition, I didn't want the liability created when you use a modified trigger. So I only use Geissele and ALG now.

With a good rifle and match ammo I can still shoot 1 moa or less with an unmodified ALG ACT trigger. Maybe you should try shooting more with the ALG or buy a Geissele. JMHO.

[m850168]

I don't think your rifle is unsafe to fire, so try it out and see how it works.

You may get light strikes, you may see flyers due to increased lock time, etc. You may not. You've already got the stuff installed, give it a go.

If it's an HD gun then you should probably reconfigure to something that's not going to risk light strikes. But if it's a range toy who cares as long as they are not so common as to be annoying?

[Arnelcheeze]

I also have 2 AR's with ALG ACTS with JP Yellows (measured 3.5#pull), no issues at all with light primer strikes. I built an AR pistol threw some JP yellows in that one, and was getting 50% light primer strikes, so you gotta test it.

[Horrendo Revolver]

I haven't shot many AR's but the ones I have all had stock triggers, and I couldn't stand them. When I bought my AR in 2012 the first thing I did was put a 3lb Timney in it. I'm happy now.

[ar15barrels]

The problem with that setup is the lock time is just incredibly slow.

Can you elaborate on that?

ALL AR's with a swinging hammer have slow lock times.
If lock time is important to you, you should shoot a remington 700 type action.

[hotrail]

So forgive me for sounding like such a noob, but frankly this is the first firearm where I have done much in the way of mods. I think you are saying that by installing the reduced power hammer spring, it will tend to lengthen the lock time which is already (for AR-15s in general) relatively long.

And I think you are saying the effect of that is that one has to hold the rifle motionless during that time, so the longer lock time will tend to diminish accuracy a bit?

[ar15barrels]

I think you are saying that by installing the reduced power hammer spring, it will tend to lengthen the lock time which is already (for AR-15s in general) relatively long.

What you want is a reduced power trigger spring, an extra power hammer spring and to drastically reduce the mass of the hammer so it can move faster.