ManKung Cobra lower picatinny rail
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ManKung Cobra lower picatinny rail
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Lower picatinny rail for the ManKung Cobra pistol crossbow.
You need:
2x M4x20 screw
2x M4 nut
1x M3x10 screw
1x M3x14 screw and 2-3 washers
2x M3x5x4 threaded inserts
I wanted to have a very long picatinny rail under my Cobra pistol crossbow like the one on the ManKung Alligator2. There i wanted to mount a front grip. Now i can get rid of the ugly spout ;-)
You have to drill two 4mm holes into the crossbow body and melt in threaded inserts for stability. Put on the rail (without screws) and mark the drill spots with a nail thru the holes at the front of the rail. Then take a 4mm drill and make the holes about 5mm deep. The holes have to be orthogonal to the rail while the crossbow body is somewhat curved. Melt in the threaded inserts orthogonal too.
If you put on the rail now the first hole should touch the first insert. This is where the M3x10 screw goes in. The second hole will have some distance from the insert, so use the M3x14 screw there and put some washers in between. If the front fits, put in the M4 screws and secure with the M4 nuts. Voila!