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View Full Version : LMT Enhanced BCG w/ 14.5" mid length question


FCOD
09-20-2012, 7:03 PM
Question for those who have used this combination. I have read on several forums that these carrier groups are meant for 14.5"/16" carbine barrels and that you shouldn't use them on a mid length setup. I'm not going out of my way for one but I already have one from another upper that I was planning on using with my 14.5" BCM upper that arrives tomorrow.

Will I be okay running this bolt in my new upper? I really don't want to sell it and I don't want to spend the money on another bolt carrier. Anybody used this with success or failure? If not I guess I'll try and trade it for a Spikes or Fail Zero NiB BCG.

Dhena81
09-20-2012, 7:35 PM
I'm not sure if it will work but you could just buy a new carrier for 50-70 bucks since you already have a kick @$$ bolt.

Read post #12

http://www.m4carbine.net/showthread.php?t=3379

FCOD
09-20-2012, 7:52 PM
Edit: Sorry. Responded before reading your link.

Swapping the carrier is a great idea that I didn't think of. I didn't realize that one little extra port made all the difference as far as the gas goes.

DBR
09-20-2012, 8:25 PM
It's not just the port. The cam pin track is different to delay unlocking. The LMT enhanced bolt carrier is intended to offset the long dwell time of a car gas 16" gun. A 14.5" middy is a more delicate balance than more conventional combos. BCM has theirs worked out. I think it would be best to use the parts they chose.

WETP
09-20-2012, 8:44 PM
I didn't get that memo. The AR on my avatar has a Noveske 14.5" middy running LMT enhance BCG. Two tac classes later and many trips to the range, all good.

FCOD
09-20-2012, 9:21 PM
Good enough for me WETP!

Thanks! Thats why I was looking for first hand experience with running it on a middy.

ar15barrels
09-21-2012, 6:37 PM
Stay with the lightest buffer possible and only use full power 5.56 ammo if you are gonna try an LMT enhanced carrier in a 14.5" mid length upper.
I can just about guarantee problems with that setup if you use wolf or pmc ammo and a heavy buffer.

Dhena81
09-21-2012, 8:52 PM
Randall :shock:

ar15barrels
10-02-2012, 1:06 PM
Randall :shock:

http://www.calguns.net/calgunforum/showthread.php?t=620369