Just installed extended ARFX butt pads on my Colt and BM ARFX stocked rifles.
These pads add 1/2" to the depth of the original 1/2" pad, bringing the LOP to about 1/2" greater than an A2 stock, which comes in handy for tall shooters.
While too long for the majority of shooters, I'm glad that the charging handle is no longer nestled in my nostril.
I'll change it back to the 1/2" pad once the cold weather returns and heavy outer garments are required.