Umarex Quick Notos question

2 for the barrel locking to the receiver.
shroud or the rail?
2.5 for the screw that’s above the grub screw that locks the barrel

Beware, the sizes mentioned above are the sizes of the hexscrewdrivers to (un)screw them! The ACTUAL sizes of the screws themselves are larger!

Metric screw sizes are named by their diameter, (e.g. M2, M3, M4) NOT by the size of the hexdriver to be used!
 
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