SHOTGUN: ISTANBUL SILAH MODEL WINCHESTER SUPER X PUMP (SXP) IMPORTED BY BACO INC, SERIAL NUMBER TR188742YZSP, BLUE / CCH, CASE NOT INCLUDED, PUMP, 20 GAUGE, 18" Notes: ISTANBUL SILAH WINCHESTER SUPER X PUMP (SXP)-12 Gauge Winchester SXP 12 Gauge Action: Pump-action, with a rotary-bolt locking system. Gauge: 12 gauge. Manufacturer: Istanbul Silah in Turkey for the Winchester brand; the SXP has been produced/imported from Turkey. Chambering: Depending on the particular model, SXP variants are available for 2 3/4", 3", or 3 1/2" shells. Barrel: Model-dependent. Common hunting versions use 26" or 28" barrels, while Defender versions have shorter barrels. Receiver: Lightweight aluminum on many versions. Bore/chamber: Winchester describes the SXP as having a chrome-plated bore and chamber, intended to improve durability and corrosion resistance. Chokes: Sporting/hunting versions commonly use Winchester Invector-Plus choke tubes. Operating characteristic: The SXP uses recoil/inertia assistance to help start the rearward movement of the pump, which is one reason the action has a reputation for being particularly quick to cycle.