Gauge: 12 - Barrel length (cm): 66 - Barrel length (in): 26 - Chamber (mm): 89 - Chamber (in): 3 1/2 - Choke: OCHP - Lylium: Y - Rib: 6x6 - This black-synthetic semi-auto shotgun is today’s most advanced of its kind. It reliably feeds every kind of 12-gauge shell from steel to lead from 2 ¾ to 3 ½ and from 24 to 64 grams. It is capable of firing 4 shots in less than one second and it is extremely soft-recoiling and pleasant to shoot no matter the type of shell or the length of your hunting or sporting day. Also it is impeccably balanced and follows your eye naturally to that fast-moving pheasant or clay target while being quick and easy to field strip and maintain after a long day in the field. Ideal for upland or waterfowl hunting as well as target shooting the A400 Xtreme Unico Synthetic is the perfect choice for the shotgunner looking for durability as well as versatility. - Additional Features: - Fast Low-Profile Action with Built-In Rails - The A400 action gives you the fastest follow-up shots on the market. Thanks to the unique Blink technology it shoots 36% quicker than any other type of semi-auto shotgun meaning that while your friend’s action is still cycling you will already have downed that second bird. While having vault-like strength it is light and compact so that the vertical distance between your dominant eye and your supporting hand is kept to a minimum thereby greatly increasing your chances of hitting the target. Also the top of the action is equipped with built-in rails so that you can easily mount the optics of your choice for turkey or deer season without any gunsmithing. - Low Recoil (70% Recoil Reduction) - The A400 Xtreme Unico Synthetic gives you several of today’s most advanced recoil reduction concepts right out of the box. Combining hydraulic shock-absorbers with an ultra-soft Micro-Core butt-pad these systems work together to minimize not only the recoil from the cartridge ignition and firing but also from the backward-movement of the bolt. Also the A400 Xtreme Unico is designed to recoil parallel to the cheek mount which also reduces felt kick while giving you faster follow-up shots. Altogether these recoil-reduction devices decrease felt recoil by 70% meaning that you can enjoy a longer day in the field or at the range without your shoulder paying the price. - Durable Finish Easy Maintenance - The finish on the OptimaBore HP barrel offers superior resistance to the elements including water powder sand and salt spray. This means that with basic maintenance this shotgun can easily give you more than a lifetime of hard service. Speaking of maintenance the A400 Xtreme is easy to field strip and it disassembles in five easy components that are a snap to clean and to put back together for your next adventure.