Centurion Arms Hand Stop, made specifically for the CMR Handguard.
PN: M14-7-FDE
***PLEASE NOTE***
CMR ACCESSORIES ARE MADE SPECIFICALLY FOR THE STANDARD, ORIGINAL CENTURION ARMS CMR HANDGUARD! THEY WILL NOT FIT ANY, (INCLUDING OURS), KEYMOD, M-LOK OR MOST OTHER BRANDS OF HANDGUARDS.