Vikka Chronograph vblock and base

thingiverse

This is a cover and replacement v block for the bottom of the Chinese chronograph sold under many different names on Amazon. I like using TPU because it is flexible, but PLA or PLA+ works well also. Use a velcro strap to hold the chrono to the gun, it is faster and easier than the metal v block, and does not mar the finish of the airgun. Rubber bands work well also. There is a place to use m3 nuts to hold the v block in place, but the m3 screws hold the block well without the nuts.