Extended Weaver style scope rail
Quality machined aluminum base that attaches to both your receiver and barrel. Includes 9 cross slots to allow for multiple positions of your scope rings. Includes a total of 6 holes for mounting. 4 holes are for the receiver and 2 holes are for the barrel. Includes 6 screws and an allen wrench. Whilst this item is intended to be used to positively lock the barrel to the receiver it can also be use without drilling and tapping the barrel at the front of the mount which means this base may simply be used as an extended scope base for LER scopes or possibly with some night vision units.