Which upper to use for YM BCG?

AR/M4 Custom Build Forum
1

I’m about to build a 16 inch spr type of set up. Have the WOA 16 inch match barrel and the Young manufacturing national match BCG but still not decided which upper reciever that I have here with me to use. I have the Vltor MUR and a standard M4 reciever. I heard some say that YM BCG can’t fit well with the MUR but again others have.
I wonder which upper can make my groups tighter.

I tried to fit the YM BCG in the MUR and indeed its a bit tighter that the standard reciever but quite still undecided since its might not cycle well.

Need your help to decide. THanks.

2

If you have both uppers use the MUR and if it does not work like you want switch it out.

3

You got a point there my friend…i’ll try the MUR first and if everythings goes well then it stays.

Thanks for the suggestion:smile:

4

If it didnt work for whatever reason. Id keep the MUR and get a different BCG such as a BCM. I have them in both of my rifles and love them.

5

Finished the build today and fired a couple of rounds no malfunction whatsoever. Will try it over this weekend to check on accuracy. Thanks guys.