Originally Posted By TigerStripe:
I have a newer upper and it has the tappet with the gas trap and "rings" on both ends. Should it go in either way, or is there one way in which it should go?
Thank you for purchasing our product, when you have many choices to choose from.
Yes, our gas piston system does function with both sides of the reverasble gas piston. We would normaly run with the three groove side of the gas piston toward the muzzle, in the gas block. The three groove side of the gas piston has larger gas port holes then the two groove side gas piston which has smaller gas port holes to restrict gas pressure. The reversable gas piston can be used in several way's.
Example: Using the two groove side of the gas piston (placed in the gas block toward the muzzle ), will help to reduce felt recoil. Depending on the ammo being used, make sure the upper doesn't short stroke by placing one round in a magazine and fire the weapon to ensure the bolt holds open.
Another example is: Using the restrictive two groove side of the gas piston when shooting with a suppressor. The suppressor increase back pressure. We retrict gas pressure using smaller gas port holes in the gas piston. This helps to reduce felt recoil.
The picture shows the two groove side of the gas piston toward the barrel nut. (The three groove side of the gas piston is facing the muzzle)