I wouldn't use anything from CMMG. I have seen too many out of spec parts from them.

 

If I was in the market, I would buy the ACT/LPK combo from ALG Defense, should you be inclined to use that trigger.

I like the fact that ALG offers a mil-spec LPK w/o the FCG and no A2 grip.  How many of those standard plastic A2 grips do you need floating around your gun room??  

Anyone try the spikes enhanced LPK?

I'm sure it's GTG

With ALG and BCM offering lower parts kits. And cheap trigger-less colt lower parts available at g&r there is no reason to look elsewhere. I tend to get the colt parts but I like to order them individually since I use geissele ssa triggers and bad-cass selectors

 

 

As for triggers go with ALG or BCM for cheap or geissele for expensive.