This is the  Complete Breech Bolt & Slide Carrier 3 1/2"  off of a   Mossberg  Model 835 ULTI-MAG  12GA Shotgun.   Parts are  in good used condition with handling dings & scuffs from use.  You get exactly whats pictured. 

I have the 28" VR Barrel off this gun listed separately & it is stamped: MOSSBERG - CHAMBERED FOR 2 3/4", 3", & 3 1/2" IN. SHELLS. - 12 GA - 28 IN. - "ACCU-MAG" CHOKE- MODEL 835 "ULTI-MAG" - NOT FOR USE WITH SLUGS. If interested check my other listings. 

Buyer gets FREE  shipping.

Gun parts are available to the US only as per Ebay rules

THANKS FOR LOOKING!!