You may have encountered the challenge of removing the pins from the front sight gas block to open up the field of view when using a red dot sight, or to switch to a low profile gas block. While it can be a frustrating task, it's essential to do it correctly to avoid damaging the area around the gas block.
In this quick tip, I'll show you my method for safely remove front sight on AR15, ensuring a smooth process without any unnecessary damage.
Understanding the Pins and Gas Block Setup
Before we dive into the removal process, let's take a closer look at the front sight gas block and the pins involved. The gas block has two pins, one in the front and one in the back, which go through the block and the barrel.
One side of these pins is larger than the other, indicating that they only come out in one direction. Attempting to remove them from the wrong side may lead to complications and damage.
Tools Needed for the Job
To perform this task, you'll need a few essential tools:
- A bench block: Choose a bench block molded to fit your front sight gas block. This will provide a stable platform for the pins to fall out.
- Punches: Use a set of punches, including the largest 5/16" punch for maximum energy transfer and effectiveness.
- Hammer: Opt for a hammer with sufficient weight, such as a standard ball peen hammer, to apply the necessary force.
- Safety glasses: Protect your eyes from any accidental debris or metal fragments.
The Removal Process
- Position the Bench Block: Place the front sight gas block on the bench block, ensuring that the pins are aligned with the "pins out" marking on the block. This ensures that you are driving the pins out in the correct direction.
- Select the Appropriate Punch: Begin with the largest 5/16" punch, positioning it on the pin's head. The goal is to avoid slipping off the punch, which could cause damage to the gas block or barrel.
- Apply Downward Pressure: Use your free hand to apply downward pressure on the punch to keep it in place securely.
- Hammer the Punch: With the punch in place, deliver firm, controlled taps with the hammer to start moving the pin. Repeat the process until you feel the pin begin to move.
- Switch to a Smaller Punch: Once the pin starts moving, switch to a punch with a diameter that closely matches the pin's size. Continue using light taps until the pin is entirely free.
- Remove the First Pin: Once the first pin is out, wiggle the front sight gas block until it comes off the barrel.
- Repeat the Process: Repeat the same process for the second pin, ensuring it is removed in the correct direction.