I am sitting on an LMT lower, and I would like to turn it into a true M4, with a 14.5" barrel and a permanently staked flash hider. I see that BCM offers the LMT 14.5" uppers for sale, but they don’t have the permanently attached flash hider. Does anyone offer this service? I would like to buy the LMT upper from BCM and then send it to someone who can do the permanent attachment. I would like to keep this rifle all LMT.
Thank you for any advice you can offer.
Sounds like a good plan to me!
If I were in your position, I’d buy the LMT 14.5" upper from BCM and have it directly sent to ADCO for a pin/weld job.
Of course, you’ll want to mention this to BCM/ADCO before you place your order to make sure it’s a-OK with everyone.
BCM and ADCO are top notch and will definitely take care of you.
Also, make sure the flash hider you go with is going to make you’re barrel length a legal 16".
I have a 14.5’’ LMT upper with a perm attached FH. I had mine done at Denny Guns aka Global Tactical. You can also have adco attach the FH the turn around time is supposed to be pretty good.
Thanks, guys. I appreciate it.
Ya, you can easily have it done at the places stated above.
Id like to add one thing though… Since youre already getting your upper from BCM, you might want to get their A2X FH as well since youre going for the standard issue M4 look. 
http://www.bravocompanyusa.com/BCM-M4-14-5-Upper-Receiver-Group-A2X-p/bcm-urg-m4-14%20a2x.htm
BCM has one of thiers in stock with the perm. att. FH FYI
G&R also sells the BCM’s with pinned FH, they even have a couple choices.
I’ve seen ADCO’s work and it’s top notch. I may be mis-speaking but I believe gotM4 does this as well.