February 9th, 2017, 07:09 AM
Join Date: Jul 2010
Out of the 7 ARMs18 i've installed over the years, only one really stood out as not fitting an out of spec receiver. The dovetail was cast too far forward on the Springfield receiver and would not allow the mount to settle into the grooves. Easy fix... filed a little at a time off the mount until it smacked on solid. Dab of blue loctite on all touch point and threads then torque. Rock solid !! Cant go wrong. Looks like it was made as part of the receiver.