T-NT upgrade: bolt assembly for S&T M1903

TNT bolt assembly upgrade incoming

Will be released in Taiwan in early July.

https://m.facebook.com/story.php?story_ ... 8455404369

Test Video
With T hop and precision barrel it achieved 80% hit rate on half man size target at 70m under windy condition.

Muzzle velocity .2gram 165 m/s
Shoot with .4 gram BB

https://youtu.be/F9wI7nCEMwk -- attachment is not available ---- attachment is not available ---- attachment is not available --