How to Remove a Front Sight Gas Block

A front sight gas block is a part on an AR-15 rifle located at the end of the barrel. It serves multiple functions by acting as the front sight, securing the gas tube and holding the front of the handguards in position. If you are replacing your handguards with the free float tube, it is necessary to remove the front sight gas block to get the tube onto the barrel. Removing the gas block requires only a couple of basic tools. Before working in your rifle, make sure that the weapon is unloaded.

Things You'll Need

• Small hammer
• Pin punch

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Instructions

1. • 1

     Remove the handguards by pulling the retention ring at the base of the barrel rearward and lifting them off.

   • 2

     Tap out the gas tube retention pin next to the tube on the front sight base with a small hammer and pin punch.

   • 3

     Detach the gas tube.

   • 4

     Use your hammer and pin punch to tap out the front sight retention pin, located at the base of the front sight, and slide the front sight off the barrel.