Good investment !
Tried this item today with 2 large frame Glocks in 45acp and 10mm. 10 rounds of 45 and 50 rounds of 10mm comparing handloads to factory ammo MVs, this little item made the task soooooo simple once I got it figured out and mounted. Without this I would have to have used the non-gun mounted chronograph on a tripod ahead of the firing line at my club, and with other folks down the line that would have been too much interruption of their fun. Highly recommend for any numbers-a-holic chrono user (if you have the one this is made for, that is !)
