Black rain drop in.

[CASEYPM]

There is a gun shop selling black rain 3.5 lb blue drop in triggers for $99. I have a P-tac 10 lower which is basically the same as a PSA pa-10 lower. Would this trigger fit? I've heard there was fitting problems with CMMG but I can't find anything on black rain.

[survivalshop]

  There is usually no problems with the Modular fire control groups  ( drop ins ) in any rifle I know of .

[ChaseFan9]

If it's a local shop you could ask the owner if you can bring your lower in, trigger and hammer removed, and see if it'll fit. If it's a drop in it'll probably take all of 30 seconds to see if the module will fit.

[CASEYPM]

Thank you, that's what I figured I'd do. It is local. I've heard that P-Tac and PSA AR 308's have a couple thousandths of an inch less clearance for drop ins than most other lowers. If not, I just met someone that has a gun shop / machine shop that could fix it.

[CASEYPM]

From what I've read, it's was only one that wouldn't fit. Either Giessele or CMMG.

[ChaseFan9]

I'mma go out on a limb and say it probably has issues with CMMG, but it seems like someone else mentioned problems between PSA lowers and some Geissele triggers....