The LaRue RCO mount I got for my PAC5X scope put it about on Picatinny notch farther forward than I wanted it.
It hit me today that the mount is reversible! So I reversed it.
Before...
![]()
After...
![]()
The RCO (oriented "correctly") is designed to put an ACOG a lot father back on the rifle and is intended to be used without a BUIS, so the contour of the "tail" matches the top of the charging handle boss on the upper receiver. That little tail interferes with the BUIS I've mounted if I wanted to put the scope where I wanted it.
Reversing the mount lets me put it where I prefer it and requires I go to the range and zero the rifle anew.
Darn! I have to go shooting!
It hit me today that the mount is reversible! So I reversed it.
Before...
After...
The RCO (oriented "correctly") is designed to put an ACOG a lot father back on the rifle and is intended to be used without a BUIS, so the contour of the "tail" matches the top of the charging handle boss on the upper receiver. That little tail interferes with the BUIS I've mounted if I wanted to put the scope where I wanted it.
Reversing the mount lets me put it where I prefer it and requires I go to the range and zero the rifle anew.
Darn! I have to go shooting!