Roll pin wizard will allow you to easily install your bolt catch roll pin without scratching your receiver.
Gas block roll pin install.
Loosen the pinch screws and slide the gas block assembly onto the.
Gas tube roll pin install made easy.
Yes it is a good idea to use a guide as you properly locate the gas block.
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Remove the gas tube and re install it into your new gas block.
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.
In this diy video i will show you a tool to make roll pin installation on ar s easy to do.
Do not use exessive force to install the roll pin.
Thanks for the questions.