The Superior Parts SP 877-317 Cylinder Ring can be seen on the following parts breakdowns:
NR83A schematic (#21)
NR83A2 schematic (#19)
NR83A3 schematic (#19)
Additionally the SP 877-317 Cylinder Ring can be used on Hitachi NR90AE and NR90AE(S) Framing Nailers.
Explanation of "Stock" Availability Term
Stock items are products we normally have available for immediate shipment either from our warehouse or our vendor's warehouse. If we or our vendor are out of stock or do not have enough inventory to complete your order we will notify you by phone or email as soon as possible. If you need an immediate inventory status update before you place an order please call our sales department direct at 800-323-2999 Monday through Friday 7:00AM - 4:00PM Pacific Time for this information.