if you swap the grip frames you may need to adjust the hammer lug is what Tee means, put the grip frame on the marker **** it anf fire a few times to see if the sear releases the lug ok..
If its not staying cocked or wont fire then youll need a adjust this lug.
take the bolt out and put an allen key down the hole in the top of the marker between the fedneck and back, pull the cocking rod slightly and the and the the allen key should drop into the hammer..
If its not cocking turn half a turn clockwise to lower the lug
If its not releasing/ Firing Half a turn anti c/wise to raise it
If you find it fires fine then leave it alone
