WTS/WTT Magpul Rear MBUS New 6920 take off

[Hova]

I have for sale, a brand new, black Magpul rear MBUS. This is a take off from a brand new 2013 Colt 6920.

$40 FTF in SF
$46 shipped by USPS money order
Trade for a DD or BCM low profile gas block .75

Pics upon request

Thanks!