UPDATE OCTOBER 2018
Here are two last versions of Boltex kit. Evolutionally i've came to solution that 2 pins fixation of battery box is the best. But for your pleasure there are -1 version with battery box locked with sliding rail.
Internals of the body (handguard normally) reworked for easier printing
Hex nuts replaced with square nuts where possible.
Conversion kit for M4/M16 airsoft rifle.
Tested on CYMA.
Designed for 37.5 mm barrel holder ring.
Handguard is fixated with 3 screws.
Battery compartment can be replaced with rail.
Uploaded as multipart model.
So you'll need some M3 screws and nuts.
Assembly instructions upon request.
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