Winchester Super X2™ Practical MK I
http://www.winchesterguns.com/products/catalog/historic-detail.asp?family=009C&offset=%2D1&mid=511016

Lower your times and raise your scores with a ready-for-competition Super X2 Practical MK I. The 2 3/4" gas-operated action is proven fast in recent tests, firing five shots in .49 of a second, while reducing felt recoil to put those shots on target. The MK I features a compact 22" barrel, eight-round extended magazine and rugged composite stock and forearm. A TRUGLO® fiber-optic front sight helps pick up targets fast. The Standard Invector™ choke system improves pattern performance with shot and still works accurately with rifled slugs. An Improved Cylinder choke tube and sling swivel studs are included.