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1/6/2013 3:28:39 PM EDT
I have just gotten A DPMS LPK and a CMMG LPK. The milled area of the trigger on the CMMG kit looks rough as a washboard. The DPMS trigger is much smoother. I heard a lot of not so positive feedback on the DPMS kit, and not much of anything on the CMMG. In the opinion of those of you that have used the CMMG LPK how does it stack up comparied to the DPMS kit? Now we all know that you are doing good to find any kind of LPK in todays market at a humane price.
1/6/2013 5:09:04 PM EDT
[#1]
Have you dropped them into a lower and function checked it? You'd be surprised at what will work just fine. If it works and feels ok, just live with it. If it is too bad to tolerate, or doesn't function properly, get a smith to work on it. I've had Bill Springfeild do five of my triggers. They are much better now.
1/6/2013 5:10:25 PM EDT
[#2]
I completed a build with a cmmg kit a few months ago and everything was fine.
1/6/2013 5:59:47 PM EDT
[#3]
I have a complete cmmg lower from around 2008 and all the internals look rough. Works as intended though.
1/6/2013 6:54:15 PM EDT
[#4]
I used one CMMG LPK and will never use another.
Used several DPMS LPKs and the rest have been PSA.
Regardless, I polish the hammer and trigger sears and limit the trigger travel with a setscrew in the grip screw hole; it makes the standard AR-15 trigger group tolerable.

Joe
1/6/2013 7:09:52 PM EDT
[#5]
No experience with CMMG but I have used 2 DPMS LPKS on builds. Both went together fine, feel and function as good as most others I have used.
1/6/2013 7:24:05 PM EDT
[#6]
Only difference I have been able to find is cost.  I have never had a bad LPK set from any source.  Use what you can find for whatever you are willing to pay.
1/6/2013 7:40:03 PM EDT
[#7]
Quoted:
...  I have never had a bad LPK set from any source....



Same here.  The biggest "problem" I have ever run into is that the roll pins in some are harder to start and punch all the way in.  I also had some STAG kits where the hinge and take-down pins were a bit hard to get in and out, but a quick sanding of the thick finish cleared that up pretty easily.
1/6/2013 7:49:01 PM EDT
[#8]
Sell them both on EE for 3x the price you paid and buy a Spike's Enhanced kit with the profits a month from now.
1/7/2013 2:42:19 AM EDT
[#9]
I'd use the CMMG.  They are a little more consistent in their production.

I've seen a lot of LPKs.  I've seen broken pins, not caused by being overgassed, undersprung, or too light of buffers.  I've seen one maker have such a large tolerance (the plus or minus part) that I took a dozen triggers and tried to drop them into the same lower.  Most were tight, some fit fine, a couple wouldn't go in freely at all.
As to the "smith" mentioned... I prefer a nasty trigger to one that may or may not double when I pull it.  I almost sent in a few, but luckily did more research.  Too much of a trend with that happening for me to risk it.
1/7/2013 4:27:01 AM EDT
[#10]
CMMG stuff used to be mostly DPMS, don't know if that has changed over the years or not. Personally, I  don't use either
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