I’m looking for a Mk 8 SMR but of course that is proving to be a daunting task. If you guys happen to stumble on a site that has them in stock I’d really appreciate the heads-up.
Well you can start by reading this and then this.
https://www.m4carbine.net/showthread.php?82447-PLEASE-READ-THIS-FIRST-Custom-Build-AR-Forum