Quick view Mesa Tactical Mesa Surshl Al/rmr Mnt Ben M4 6 12ga $128.99 The line of SureShell shotshell carriers with integrated Trijicon RMR reflex sight mounts for the Benelli M2/M4 and Beretta 1301 shotguns, are similar to Mesas SureShell carriers with integrated optics rail for those platforms, instead of a Picatinny... Compare Add to Cart