Align the roll pin groove with the roll pin hole in the gas block and re install the roll pin being sure the alignment of the gas block and gas tube is correct.
Gas block roll pin install.
Loosen the pinch screws and slide the gas block assembly onto the.
Easily install your bolt catch roll pin without scratching your receiver.
Roll pin wizard will allow you to easily install your bolt catch roll pin without scratching your receiver.
Roll pin wizard also allows you to easily install your pivot pin spring and detent.
Do not use exessive force to install the roll pin.
Remove the gas tube and re install it into your new gas block.
In this diy video i will show you a tool to make roll pin installation on ar s easy to do.
The barrel and gas block will come drilled in the correct location with the roll pin included in the bag.
Thanks for the questions.
Yes it is a good idea to use a guide as you properly locate the gas block.