BC73,
This is straight from the Horses mouth...
PARDNERĀ® SHOTGUNS
ADDITIONAL 10 GAUGE BARRELS
10 gauge shotgun frames can only be fitted with the 10 gauge shotgun barrels listed below. H&R 1871, LLC will only fit the listed barrels to 10 gauge frames manufactured by H&R 1871, LLC, with the New England FirearmsĀ® brand name.
10 GAUGE SHOTGUN BARRELS
Part #
Description Price
924 10 Ga., 3 1/2" Chamber, 28" Full 44.00
638 10 Ga., 3 1/2" Chamber, 24" Cyl. Bore 56.00
(Includes adjustable rifle sights for slug shooting.)
377 12 Ga., 3" Chamber, 24" Fully Rifled, Bull 77.00
(Includes scope mount rail and offset hammer spur.)
377 is the Ultra12 Gauge barrel designation, the other two are the only ones that will fit your reciever... Hope this helps, MTNMAN :wink: