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8/11/2012 6:45:23 AM EDT
Just finished up my first build and used a LPK from PSA.  I go to admit, I'm not too thrilled with the feel of the trigger.  Its somewhat gritty feeling.  Is this common with PSA?  I'm by far no expert with trigger "tweaking" but what suggestions do you recommend (short of replacing the trigger group with a different brand)?
8/11/2012 7:15:55 AM EDT
[#1]
I bought a psa lpk and it had a gritty trigger when I installed it. I did not like it at all. After I have shot it and dry fired it extensively the grittiness is pretty much gone. There is still some creep but the grittiness is gone.
8/11/2012 7:44:56 AM EDT
[#2]
I have built with several different LPKs and of them all the PSA one had the best stock trigger.  I guess it may be just hit and miss, but I was hope not.
8/11/2012 9:02:43 AM EDT
[#3]
You can put some Flitz or other metal polish where the hammer and trigger meet. Then dry fire a few hundred times, clean off the polish and add a dab of grease to the same area. Or just shoot the hell out of it!
8/11/2012 9:10:16 AM EDT
[#4]
That's pretty normal for a stock AR trigger.  PSA doesn't make their own triggers.  



The best real option is to buy an upgraded trigger from geissele.  They cost money, but I have seen bad home trigger jobs do things you don't want them to.
8/11/2012 10:18:37 AM EDT
[#5]
My advice would be to break it in first, shooting it and/or dry firing.  It may or may not get better, if it doesn't then replace it.



Some are pretty good right out of the box, some need breaking in and some just plain suck.


 
8/11/2012 3:41:01 PM EDT
[#6]
Quoted:
I have built with several different LPKs and of them all the PSA one had the best stock trigger.  I guess it may be just hit and miss, but I was hope not.


Same here.
I've built rifles using Model 1 kits, DPMS, RRA, PSA, and a few no name brands.
I currently have a PSA kit (with FCG) in a 308 I have and it is by far the smoothest, lightest, crispiest STOCK trigger I've ever seen. So good in fact, I plan on leaving it in there.
My PSA trigger comes in at 4.5 lbs. My DPMS trigger is pegging in at 8lbs+.
No grit from start to let-off on my PSA. DPMS feels like lit's lubed with silky sand.
DPMS and RRA have normal trigger pull lengths. My PSA pull length is about halfway between my Geissele SSA and a normal stock trigger.  

I've heard a lot of folks gripe about the PSA triggers, but all I know is the one (and only one) example I have from them is pretty good.  It could be I just got lucky.
8/11/2012 5:08:22 PM EDT
[#7]
Get a gessele!!
8/11/2012 6:13:30 PM EDT
[#8]
I have used every standard mil-spec trigger on the market and I have had better luck with PSA's triggers than any other manufacturer. That being said, if you build enough of these things you will find that fire control groups are just hit and miss.
8/12/2012 1:40:24 AM EDT
[#9]
What's cool about PSA is that you can buy there excellent LPK without the trigger group and add the one that you want.
8/12/2012 1:41:02 AM EDT
[#10]
What's cool about PSA is that you can buy there excellent LPK without the trigger group and add the one that you want.
8/12/2012 6:34:42 AM EDT
[#11]
Is this common with PSA

No. It's common with any standard,over the counter, stock, mil-spec trigger.

You'll be lucky to get a "decent" stock trigger 50% of the time.
8/12/2012 6:44:18 AM EDT
[#12]
Quoted:
You can put some Flitz or other metal polish where the hammer and trigger meet. Then dry fire a few hundred times, clean off the polish and add a dab of grease to the same area. Or just shoot the hell out of it!


This.

A way to speed up the polishing is to put forward pressure against the hammer while you pull the trigger.

The lower of course has to be separated from the upper in order to do this.

Also you have to keep the hammer under control or have a dry firing block in place to avoid any damage to

the BHO or Lower Receiver.

If you don't have any metal polish on hand, tooth paste will work.  (Paste not gel.)

ETA: Like has been stated before, factory tiggers are hit or miss, as far as ''plug-and-play'' goes.

You can get an awesome trigger but have a so-so hammer or sear...  
Or you could have an awesome hammer and a so-so trigger and sear...
...See where this is going?

The the most important thing that you can expect from any vendor, as far as standard LPKs go, is that the parts you get work safely.

The rest is just icing on the cake, if you happen to get one that breaks like glass, count your lucky stars.

If you do happen to get one that doesn't work the way it's supposed to I'd start looking at the Lower vs. the LPK.

The only real issues I have run across safety-wise in 19 years messing with the platform started with the lower not the

parts in it.

Nowadays, the lowers are all made by the same companies but you can still fins some older pre-ban lowers that were

cranked out of some pole-barn that have real issues.

8/12/2012 8:40:20 AM EDT
[#13]
My PSA trigger was really gritty and creepy. I didn't even want to shoot it. Took it back out, did a careful polishing job on it and now has zero creep and a very smooth crisp trigger pull.
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