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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:

866-NUMRICH
(866-686-7424)

Outside U.S.A.:

845-679-2417

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

B-2000 (*)

Schematic Image

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

Image Part Key Product # Description Price Add To Cart
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55 591140 Gas Piston Bar, 12 Ga. $5.25 Sold Out
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55 591150 Gas Piston Bar, 20 Ga. $5.25 Sold Out
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56 591170 Gas Piston Buffer, 12 Ga. $8.45 Sold Out
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56 591380 Gas Piston Buffer, 20 Ga. $2.35 Sold Out
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57 476660 Gas Piston Spring, 12 Ga. $8.45 Sold Out
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57 476750 Gas Piston Spring, 20 Ga. $8.45 Sold Out
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58 591600 Gas Piston Valve, 12 Ga. $10.60 Sold Out
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58 592280 Gas Piston Valve, 20 Ga. $10.60 Sold Out
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59 592290 Gas Piston, 12 Ga. $31.80 Sold Out
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59 476740 Gas Piston, 20 Ga. $31.80 Sold Out
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60 592360 Hammer Pin, 12 Ga. $4.25 Buy Now
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60 592380 Hammer Pin, 20 Ga. $2.35 Buy Now
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61 592400 Hammer, 12 Ga. $21.20 Buy Now
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61 592430 Hammer, 20 Ga. $15.90 Buy Now
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62 592560 Inertia Piece w/ Action Bars Complete, 12 Ga. $163.45 Buy Now
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62 592570 Inertia Piece w/ Action Bars Complete, 20 Ga. $163.45 Sold Out
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63 592690 Magazine Base Pin, 12 Ga. $4.25 Buy Now
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63 592790 Magazine Base Pin, 20 Ga. $4.25 Buy Now
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64 592800 Magazine Base, 12 Ga. $5.25 Buy Now
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64 593130 Magazine Base, 20 Ga. $2.35 Sold Out