SDS Imports MAC-2 Tactical Magazine Tube Extension Features The SDS Imports MAC-2 Tactical Magazine Tube Extension is purpose-built for Military Armament Corporation MAC-2 series shotguns and compatible variants extending the magazine tube to increase on-board ammunition capacity to 11 rounds. This added reserve matters for anyone who relies on their 12 gauge MAC-2 shotgun for home defense or tactical work where extra rounds before a reload can make the difference in a prolonged encounter. The extension installs using the shotgun s existing cap so there is no need to source separate hardware or modify the receiver to get it fitted. Because it is designed around the factory MAC-2 platform fit and function are consistent with the gun s original engineering. The anodized black finish on the SDS Imports extension tube matches the factory finish of most MAC-2 shotguns keeping the upgrade visually seamless while adding real corrosion and wear resistance. The kit ships complete with both the tube and the spring needed for proper cycling so the shooter has everything required for a straightforward installation. A longer magazine tube also shifts a bit of weight forward which some shooters find helps steady the muzzle during rapid strings of fire. For MAC-2 owners looking to stretch their shotgun s capacity without sacrificing reliability this extension is a simple and effective upgrade available for sale at GrabAGun. SDS Imports MAC-2 Tactical Magazine Tube Extension Specifications Manufacturer: SDS Imports Model: MAC-2 Tactical Magazine Tube Extension Gauge: 12 GA Color: Black Capacity Increase: +6 Rounds Length: 26.4 Compatible Hosts: Military Armament Corporation MAC-2 Series Shotguns Includes: Extension Tube and Spring Available At: GrabAGun