If you’re wondering what size punch to use for AR trigger pins, then you’ve come to the right place. In this blog post, we’ll go over everything you need to know about choosing the right size punch for your AR trigger pins. We’ll also discuss some of the different types of punches that are available, so you can choose the best one for your needs.

What is the Trigger Pins?
There are a few different types of trigger pins, and the size of the punch you’ll need depends on the type of trigger pin you’re using. The most common type of trigger pin is the mil-spec trigger pin, which is 0.154 inches in diameter. If you’re using a mil-spec trigger pin, you’ll need a punch that’s 0.154 inches in diameter. Other common trigger pin sizes include 0.170 inches and 0.177 inches. If you’re using a trigger pin that’s 0.170 inches in diameter, you’ll need a punch that’s 0.170 inches in diameter. If you’re using a trigger pin that’s 0.177 inches in diameter, you’ll need a punch that’s 0.177 inches in diameter.
Why is it important to use the correct size punch?
It is important to use the correct size punch for AR trigger pins for a few reasons. First, if the punch is too small, it can slip and damage the trigger. Second, if the punch is too big, it can damage the receiver. Third, if the punch is the wrong shape, it can damage the trigger or receiver. Finally, if the punch is not properly aligned, it can damage the trigger or receiver.
What is the most common size punch for AR trigger pins?
There are a few different sizes of punch for AR trigger pins, but the most common size is 3/32. This size punch will work for most AR trigger pins, but if you have a particularly large or small trigger pin, you may need a different size punch. Always check the manufacturer’s recommendations before purchasing a punch.
What are the benefits of using a punch for AR trigger pins?
There are several benefits of using a punch for AR trigger pins. First, it ensures that the pins are properly aligned and seated in the trigger guard. This prevents the trigger from moving around and potentially causing misfires. Second, a punch helps to drive the pins in straight, which prevents damage to the trigger mechanism. Third, it provides a more secure fit than using a screwdriver or other tool, which can slip and damage the trigger. Finally, it is much easier to remove a punch than it is to remove a screwdriver or other tool, making it simpler to change out the trigger pins if necessary.
What are the drawbacks of using a punch for AR trigger pins?

There are several drawbacks to using a punch for AR trigger pins. First, it is difficult to get a consistent, tight fit with a punch. Second, the punch can damage the finish of the trigger pin, making it more difficult to remove later. Third, the punch can slip, causing the trigger pin to be misaligned. Finally, if the punch is not the correct size, it can damage the trigger pin or the receiver.
Tips for using the correct size punch.
There are a few things to consider when choosing the size of the punch for AR trigger pins. The first is the diameter of the trigger pins. The most common sizes are 0.154” and 0.169”, but there are other sizes available as well. The next thing to consider is the depth of the trigger pins. The depth will determine how far the punch needs to penetrate the trigger housing. The last thing to consider is the type of trigger housing you are using. Some trigger housings have different dimensions for the trigger pins, so it is important to know which size punch to use for each type of housing.
The most important thing to remember when using a punch is to use the proper size for the job. Using a punch that is too small can result in damage to the trigger housing or trigger pins, and using a punch that is too large can make it difficult to remove the trigger pins from the housing. If you are unsure of which size punch to use, it is always best to consult with a gunsmith or other knowledgeable individual before proceeding.
Frequently Asked Questions
What size is the average AR trigger pin?
The average AR trigger pin is usually between 0.154 and 0.169 inches in diameter.
What is the most common AR trigger pin size?
The most common AR trigger pin size is 0.154 inches in diameter.
What is the largest AR trigger pin size?
The largest AR trigger pin size is 0.169 inches in diameter.
What is the smallest AR trigger pin size?
The smallest AR trigger pin size is 0.154 inches in diameter.
What are the dimensions of an AR trigger pin?
The dimensions of an AR trigger pin are usually between 0.154 and 0.169 inches in diameter.
Conclusion
There are many variables to consider when choosing the size of punch for AR trigger pins, including the diameter of the pins, the depth of the pins, and the type of metal the pins are made from. The best way to determine the proper size punch for your AR trigger pins is to consult a professional gunsmith or another experienced individual.

A. Wilcox Head is a lifelong shooter, hunter, and firearms enthusiast. Head grew up in a family where firearms were a way of life, and from an early age, he was taught the importance of firearm safety, accuracy, and proper hunting techniques.