What trigger for 5.45 AR15?

[Magnus DUX]

My S&W 5.45 AR needs a better trigger. It was 9lb from the factory but after some polishing, spring bending and trimming it went down to 6lb.

I would get occasional light primer strikes on military surplus ammo because of that.

Do you know of any good aftermarket triggers that would work with 5.45 surplus ammo? I was ready to buy a JP adjustable trigger system but figured to ask here first.

Another question: would JP or other reduced power trigger springs work on my gun with a mentioned ammo?

[Alaskapopo]

My S&W 5.45 AR needs a better trigger. It was 9lb from the factory but after some polishing, spring bending and trimming it went down to 6lb.

I would get occasional light primer strikes on military surplus ammo because of that.

Do you know of any good aftermarket triggers that would work with 5.45 surplus ammo? I was ready to buy a JP adjustable trigger system but figured to ask here first.

Another question: would JP or other reduced power trigger springs work on my gun with a mentioned ammo?

Your pretty much out of luck as you need a very strong hammer spring to set those primers off. The 5.45 is a poor choice for the game for a lot of reasons. One being most of the bullets are steel core which is not allowed at most matches due to it tearing up steel targets.

Pat

[Jesse Tischauser]

Ken Hebert had a S&W M&P15R setup with a JP trigger. He gave me done advice on how to set mine up. I'll see if I still have the PM.

[Jesse Tischauser]

Here is what Ken told me...

had to run the super uber bad ass red spring that came with the S&W upper. not a JP. had a few extra coils than a stock one.

JP trigger with the yellow trigger spring and the bad ass hammer spring is what i was running.

same pull length as a 3.5 trigger, broke clean like that, just had about a 5# pull due to the bad ass hammer spring. not like a oem trigger.

Hopefully this winter I'll have time to set mine up like Ken did.

[DaG]

I had one for practice and couldn't get 100 %. It fed and extracted fine from GI mags but the Orange spring still was not 100%. I had to put a extra power Wolf spring in it but by then the trigger was ridiculously heavy. I did bump the shoulder back on the firing pin for added protrusion and flattened the tip for more surface area. It seemed to help but just wasn't enough. There was a guy on M4Carbine or ARF that was doing 5.45 trigger jobs that were supposed to be reliable for surplus ammo. I think his name was Jackson ?????

DaG

[ken hebert]

what Jesse posted was true, dropped in a JP adj trigger and tuned it up right nicely, and the yellow springs wouldnt even scratch the primers. backed up to a standard spring, no joy. backed up further to the orange spring that came with it and could finally get reliable ignition, still had the little to no take up of a JP kit, but now had a 5# or so break. Wasnt horrible, but it also wasnt near like any of my other guns with JP innards. But, it never failed to go bang with that combo either.

[Bear1142]

I did the same thing with my 5.45 rifle. JP adjustable trigger kit with a red overpower hammer spring. Probably about a 4-5 trigger pull, but it's very crisp and clean and it feels a lot lighter than what it registers on a trigger gauge.

Never had a problem with surplus Russian or Bulgarian ammunition.

Erik