Seekins Gas Block, Black Finish, Low Profile Adjustable Gas Block .750 0011510031 Available to order on-line. Ships in 5-14 days $69.00
Seekins iRMT-3 V3, Billet Upper, 223 Rem/556NATO, Only Fits SP3R V3 Rail, Black Finish, Only Compatible w/Seekins Precision SP3R V3 Rail 0010900011 Out of stock. Check back later... $231.00
Seekins Integrated Rail Mounting Technology, Billet Upper, 223 Rem/556NATO, Black Finish 0010900007 Out of stock. Check back later... $231.00