This hop unit was designed to allow easy manual chambering of aspherical rounds, specialty rounds, and for nozzle-bucking compression testing in the M4. This is the short cutout version. (long cutout version pictured)
cm:
5.242 w x
2.642 d x
1.6 h
in:
2.064 w x
1.04 d x
0.63 h
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