Mesa Tactical SureShell Polymer Carrier and Rail Beretta 1301 Tactical/A300 6-Shell 12 Gauge 3.25 in Black. These Ammo Pouches by Mesa Tactical are over molded from glass-filled polymer and use a dual-rubber anti-friction system to reliably hold your shotshells in place. The original SureShell Shotshell Carrier used to be a standalone product and now several years later it has been reincarnated as the SureShell Polymer Carrier and Rail System. This re-engineered version of the extremely popular shotshell carrier includes two shell holders from our Ballistic Research Group made from a mix of molded fiber-reinforced polymers which save weight and make the carrier assembly more rigid than the original. The basic saddle rail design provides a robust mounting platform suitable for mounting a variety of optical sights. This version of the SureShell Polymer Carrier and Rail features Picatinny rails machined from aircraft grade 6061-T6 aluminum which are mil-spec hard anodized and provide a durable non-glare matte finish. You can pick up this Mesa Tactical SureShell Polymer Carrier and Rail here. Specifications for Mesa Tactical SureShell Polymer Carrier and Rail: Manufacturer: Mesa Tactical Color: Black Package Contents: Mesa Tactical SureShell Polymer Carrier and Rail What firearm models does the manufacturer say Mesa Tactical SureShell Polymer Carrier and Rail is compatible with? The manufacturer suggests that Mesa Tactical SureShell Polymer Carrier and Rail is compatible with Mossberg Model 930 Remington V3 Mossberg Maverick 88 Mossberg Model 500 Beretta 1301 Competition Benelli SuperNova Benelli M4 Benelli M2 Beretta 1301 Tactical Kel-Tec KSGMesa Tactical 94320: SureShell Polymer Carrier and Rail Beretta 1301 Tactical/A300 6-Shell 12 Gauge 3.25 in Black