sterling1711Assembled, Pin & Weld by D Wilson 13.9" Criterion Core barrel with SureFire 4-Prong flash hider (pinned & welded) BCM upper receiver, gas block, and gas tube True 13" Geissele Rail MK8. FOR SALE OR TRADE FOR 11.5 Geissele upper URGI, Superduty, Etc!. If we trade we'll both cover our own shipping. Price is shipped.
