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This is a modification for the Wisp-22 cheek and butt pad risers. This modification makes the long thin threads much stronger without trying to drill a straight hole and epoxying in a rod. It utilizes 2 M4 X 60mm socket head bolts for the cheek riser and 2 M4 X 42mm socket head bolts for the butt pad riser. You also need 4 M4 nuts. If you need to order these long fasteners for this, just buy 60mm bolts and cut them down for the but pad riser. Once the print is finished, I use a 4mm drill bit to clean up the inside of the hole. The nuts are a press fit, so you can use the bolts to help pull the nuts into their recess.
LBRY Tags: kaewon; wisp22; wisp-22; guncad; wisp
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