Degree of difficulty: **
Time for job: 10 minutes
AR2078 and 2078A
only difference between this kit and the QB78 Front Band Kit is that
the screw is not thinned-down, but is full width throughout, so it's
not prone to snapping as is the QB78 part. For.177 and .22 calibers.
NOT fit the QB78 as the full-width screw will not pass between
the barrel and main tube.