Date: 13/12/2018 7:8
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BN Mainspring HW77/97K

BN Mainspring HW77/97K.

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1-year limited warranty

PY-A-3790

$21.50

List Price $25.75 Save $4.25 (16%)

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  • Description
  • Customer reviews
  • Q & A: 1 answered question

Beeman/FWB/Weihrauch part.

NOTE: This mainspring is identical to part# BNP-9048 as far as OD and metal strength goes, however, this spring has 31 coils, compared to the R9 (BNP-9048) spring which has 34. As a result, this spring produces a little less energy and it will make the R9 shoot smoother and cock easier.




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Item Code: BNP-9364 [PY-A-3790]

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  • shahriar from Bangladesh asked:

    How much energy could this spring produce???

    • Tyler from USA:

      This spring will produce about 15-16 FPE in a HW77/97

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