Tap (drive or beat :-D) out the taper pins from the front sight and front handguard cap and pull off the muzzle end of barrel. Remove existing handguard (top and bottom): Especially if your upper has a lot of excess room where the barrel extension pin goes. I like to remove the carrier to ensure that no forward pressure is on barrel from the carrier and buffer so it doesn't try to push the barrel forward when the delta ring is removed and just seems safer to me this way. Make sure unloaded and remove bolt carrier. Depends on what type of freefloat because there are a few different setups, but to make this as simple as possible
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