T/C High Plains Sporter. Percussion cap lock. 26" round barrel, 1 in 48" twist. Came with single trigger, with wide bow trigger guard. Came in .50 caliber only. Came with a rear open style sight, or an optional tang hunting style peep. Came with a rynite, or walnut stock. Stock has pistol grip, not straight grip, as in New Englander. The only thing I'm not positive about is how long they were made. I am going to say 1992, and 1993, but could be mistaken. I have a walnut stocked version, with the tang peep sight. Just so happens I shot it this past weekend. Goex FFFG, 80 grains, my own patches, .018" Wally World Pillow Ticking, Hoppe's # 9 plus patch lube, hornady .490" round balls, Remington # 11 caps. This muzzleloader is deadly accurate with this load, at 50 yards. I do like the pistol grip stock, and tang peep sight. I only wish that they had made this ml in .54 caliber also. The rynite stock was not available in the 1992 version.