I got lucky and got a relatively nice stock trigger on my M&P, however, it's a bit heavy so I'm looking to lighten it up a little. If I order a reduced power hammer spring, would this result in more creep or would my trigger pull be the same minus the weight? Looking to get the purple ALG hammer spring (4.5 lbs) or should I just order a ALG ACT trigger? Again, current trigger is pretty crisp with no take up straight out the box.

Thanks

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Isaiah 43:1-3

You risk the possibility of failure to fires with rounds that have hard primers. Not to say it will happen, only that it might.

It will most likely be fine, if you just want to replace the spring get he JP reduced power (yellow) spring, I've had no issue with light primer strikes on all types of ammo including Wolf steel case. That said, I think it's worth plumping down the coin for the ALG ACT, it is a significant upgrade. While you're at it I would also fit a set screw handguard retaining screw like the Joe Bob trigger enhancing set screw to get rid of any creep. That plus the ALG ACT is hard to beat for a single stage trigger.

Hmm I see ALG is coming out with a ACT-nano trigger soon so I might just wait for that since it's black.. But then again, the silver is kinda nice..

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Isaiah 43:1-3

If you are using this gun in any kind of defensive role I would skip the spring and buy a replacement trigger or just learn to shoot the existing trigger.

Changing trigger springs is always a bit of a dance. It definitely causes a reduction in reliability. It may or may not show up in real world shooting but it is a compromise.

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Use should dictate gear!

So I took my rifle to several local gun stores today and after several employees at each store dry fired the rifle, they all said that there is no point in upgrading to the ACT, after previously agreeing that the ACT would be a good improvement over the stock prior to dry firing it.. I guess that just means to save up for a Geissele trigger..

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Isaiah 43:1-3

Dude.....if it ain't broke, don't fix it.

Years ago I ordered the JP set that comes with both the hammer and trigger springs. I installed them and the result was a huge improvement -- except the rifle would double about every second trigger pull. Reinstalling the stock trigger spring cured the problem, but the resulting trigger pull was very little improved over the original.

I eventually ordered a Rock River two-stage match trigger and entered trigger Nirvana...

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Pisgah

It would be the same with lighter pull, but you might not notice.

Creep and pull weight are not linked. In fact, one has nothing to do with the other. Creep is the distance the trigger travels prior to releasing the sear. There is no spring you can change to alter the creep.

There are ways to adjust the creep on a standard MIL-SPEC trigger. I don't recommend any of them. If you want to reduce the creep, a drop in replacement is by far the most reliable and safe way to do it.

Joe Bob Outfitters has a POF trigger for $159: POF AR15/AR10 4.5lb Trigger w/ KNS Anti Rotation Pins I have one and they are marvelous. Timney is better, but I've got a couple thousand with this trigger and it's been great. Very little creep and very consistent pull weight. Night and day from the MIL-SPEC trigger.

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Freedom isn't free.

Saw this drop in single stage trigger in Brownells today, seemed like a good deal for $95 to me.

JAMES MADISON TACTICAL AR-15 SABER DROP IN SINGLE STAGE TRIGGER | Brownells

That does look like a nice trigger for a very low price. I'd love to try one out.

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Freedom isn't free.

I saw this the other day and got kind of interested for a lower end alternative. Will have to read up more before I would go that route, but it was interesting.

the RRA triggers might e worth checking out

The only thing about RRA 2 stage triggers is that they are known for being awesome until they drop their second stage. There was a time where it was a question of when not if the second stage would drop leaving you a single stage not 100% safe trigger.

I personally think for not much more $$$ there are better more reliable triggers on the market.

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Use should dictate gear!

That time ended in about 2010. Not only does RRA currently use that trigger on a number of their own models, it is commonly used by high power competitors. Those shooters tend to have a high round count and word would spread quickly if the problem was common or recurring.

I put in that $10 J&P spring today. Pull weight measured 3.5lbs. Felt pretty good for the 10 shots I ran through it. We'll see if what happens over time. It was a cheap holdover before I eventually blow some more money into it. But that will be down the road. Bought too much junk lately, need to slow it down.

Although I do not have an M&P15 (I have the 15-22) I still cruise the board to get ideas for my AR.

I kept the stock trigger and hammer and changed the spring and the screw that holds the grip to the lower receiver. Got the set of them together from Taylor Tactical Supply for less than $20 shipped. Saw a LARGE improvement on the trigger pull and groupings. The trigger pull is lighter and crisper, without the expence of a new trigger job. I was concerned that it would be too light, but it seems just right.

AR15 Trigger Adjustment Kit for Mil-Spec Triggers

After I spent some time with my M&P-15s, I came to really like the stock trigger. Short take-up, not too heavy and with a clean break. I don't shoot competitively with my ARs, so for self-defense, punching paper at ranges of 225 meters or less and harvesting the occasional deer, I have found no need to spend any additional money on these rifles.

And with the big-box stores now selling Ruger and S&W ARs for less than $500, if I was about to go in $150, $200 or more for a trigger, I'd be tempted to just buy another rifle for my collection instead.

I just put the JP yellow springs in both mine and my cousin's Sports with the Joe Bob adjuster screw. Pull weight is 3.5lbs on both. You can only go so far with the screw before you start messing with the disconnect, so I don't know how big of a difference that thing makes. They are not any more crisp, but of course springs aren't going to do anything about that. About 80rds through one and 20 through the other with no issues so far. It was a cheap alternative to tide us over til we've got the cash to burn on a Timney or SSA-E. My other has a Black Rain single stage and its not a bad 3.5lb. I wish I had the Timney to compare it to. But this cheap route will get us through til probably next fall when we get back into shooting again after the general summer slow down. Would like to try in my uncle's Core 15. Its got a 5lb stock trigger, with a great break. Much better than the Sports which are acceptable, and light years ahead of what came stock on my Sig.