Find Parts

Search By Item Number Or Keyword
Search Manufacturers By Letter

Still Can't Find It?

If you're unable to locate an item please contact us directly.

Please have the following information ready:

  1. Firearm Manufacturer
  2. Firearm Model and Serial Number
  3. Gauge or Caliber of Firearm
  4. Part Description
  5. Any other pertinent information

Then please call our Sales Department toll free at:



Outside U.S.A.


Office Hours:

Monday through Friday
8:00 a.m. to 4:30 p.m. EST

Underhammer (*)

Schematic Image

*Part Key 'NI' stands for 'Not Illustrated'.

Image Part Key Product # Description Price Add To Cart
NI 1449840 Barrel, .44 Cal., 20", Octagon - Threaded for Breech Plug $54.95 Buy Now
NI 211140 Cap Box, Oval Style $18.20 Sold Out
NI 213100B Hammer & Trigger Bushing Screw, Old Style $2.55 Buy Now
Hammer & Trigger Bushing, Old Style
NI 211180 Hammer & Trigger Bushing, Old Style $2.55 Buy Now
Rear Sight w/ Elevator
NI 395060AU Rear Sight w/ Elevator $10.05 Buy Now
NI 211340 Stock Screw Washer $2.35 Buy Now
NI 211430A Trigger Spring $2.55 Sold Out
NI 485620 Underhammer Rifle, .45 Cal. $375.85 Sold Out
NI 485630 Underhammer Rifle, .50 Cal. $375.85 Sold Out