new englander is one solid gun.i like the oversize trigger guard for winter hunting. the tree hawk barrels with the fast twist 1-21 will also fit if you wanna do longer range sabot stuff. never liked the spring loaded rear sight though. the sights notch is great looking through but the screw would back out on mine once in a while changing the sight height. i also have the TC peep sight and didnt like that one either. i went with the solid rear 'V' peep on one of my barrels and scope mount on the tree hawk and 54 barrel. this company has the fiber optic and v peep that doesnt use a spring to adjust height.
http://www.rmcsports.com/catalog.htm