Reciever rail with fixed sights for Tokyo Marui M870 Tactical/Breacher airsoft shotgun

*Important*
This is intended for airsoft purpose only. Do not use it on any sort of firearms.
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Description:
A Picatinny rail with "iron" sights, since the original TM M870 Breacher don't come with sights.
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Extra material required:
none
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Extra modification required:
none/reversable
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Extra tools required:
none
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Step to install:
Just unscrew the original rail and replace it with this one.