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Description from Mossberg...


Staff member
The action rests in a tough black synthetic stock and features a 21 inch barrel and recessed muzzle crown, combining for superb "out-of-the-box" accuracy.

With the sizzling, long range performance of the .17 HMR in mind, factory installed Weaver-style scope bases are included with every model for quick and easy scope attachment; and you'll definately want to mount a scope on this little tack driver.
Does anyone know what Weaver base # (in silver) to replace the blue "Weaver-style" bases put on in Brazil. Two of my 817s have brushed chrome barrels - a bull & a regular. The Texas office didn't seem to Know. Also if there is a one piece base in silver that would fit? I may be picky but blue bases on a brushed chrome barrel with silver rings and scope just doesn't look right.