Things I liked:The front mount fits on the rail and locks in place. Things I would have changed:Although fairly self explanatory, there are zero instructions with this item. The very small allen wrench provided, may tighten the front mount to the rail, but will not remove it without breakage. Maybe a small amount of lube would help, but no instructions to state so. The rear mount does not fit the rifle if any modifications have been done to the butt stock. This should be a part of the write up so these are not purchased by folks that have done mods. There is no place to install the butt stock mount if mods are done! What others should know:You will need to buy a different butt stock insert in order to make this work if modified but stock has been installed.