[ARCHIVED THREAD] - BCM Lower

Posted: 3/17/2017 11:35:59 AM EDT

I am going to build a mk18 with a complete DD upper. Was wondering since they don't offer complete lowers if anyone here has a BCM lower pinned to a DD upper. I only ask because I've heard BCM's tolerances are so tight sometimes people have a hard time fitting them to other companies products. Whether this claim actually has any truth behind it I have no idea. Just curious.

Thanks,
Cody

Posted: 3/17/2017 2:35:15 PM EDT

[#1]

While I haven't used that combination, you should have no problems at all.

I have a DD MK18 upper on a Noveske lower. I also have a BCM M4 upper. Both the DD and the BCM fit about the same on all my lowers.

Posted: 3/17/2017 2:39:45 PM EDT

[#2]

The only issue that I heard of was some BCM Lowers wouldn't drop free Gen 3 pmags. Those were very few. Never anything with lower / upper.

Get that BCM

Posted: 3/17/2017 4:04:10 PM EDT

[#3]

No issues matching my bcm lower with other brand uppers.

Ranier Arms has/had them on sale for like $335.00.

Posted: 3/17/2017 6:48:33 PM EDT

[#4]

Thanks guys! I've got a BCM upper but I was a little short changed at the time so I put it on a PSA lower

Posted: 3/17/2017 9:28:09 PM EDT

[#5]

I've seen enough BCM lowers that wouldn't take GenM3 Pmags to consider it a problem.

Nothing on them is any better than any other cheap stripped lower that you can pop together yourself in about ten minutes.

[ARCHIVED THREAD] - BCM Lower

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[ARCHIVED THREAD] - BCM Lower

[ARCHIVED THREAD] - BCM Lower