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I then found that the aft trigger guard screw was larger than the factory hole in the receiver, after measuring the screw it was determined that a .250" drill bit would be required to open the hole. After removing the magwell I opened the hole to correct size and reassembled the magwell including the aft guard screw.
Then was time for the pistol grip fit. As you can see the Houge grip would not seat against the receiver.
There is a required amount of material to remove from the grip to fit it. unlike the Saw or other AK grips, I have Houge on all my weapons and love them, so it was worth the trouble to me.