Rainier Arms Ruc Pro Mk2 5.56 Nato Partial Upper Receiver Black 12.5 in RA-RUC-PRO-MK2-125-PU
$650.00
Rainier Arms Ruc Pro Mk2 5.56 Nato Partial Upper Receiver Black 12.5 in RA-RUC-PRO-MK2-125-PU. Bringing the highest quality parts to the market while offering the best value as well. This partial upper utilizes a Rainier Arms Low Pro nonadjustable gas...