KM Tactical Dual Side Charging AR 15 Upper Receiver

KM Tactical Dual Side Charging AR 15 Upper Receiver
Product Specs:

CNC machined from 6061 billet aircraft grade aluminum
Skeletonized 1913 picatinny rail
M4 feed ramps
Side charging upper receiver
Ambidextrous Screw in Bolt on Side of BCG
Beveled ejection port
Class III Hard Coat Anodized
100% Made in the USA

This upper comes with a proprietary side charging bolt carrier group.  As is, this upper comes with a 5.56 BCG but can be swapped for standard cut bolts to accommodate other calibers.
This upper does not utilize a standard charging handle and has a threaded plug in the back of the receiver. The upper charges via a screw-in bolt on the side of the BCG, similar to an AK-style rifle.
This upper can be set up as a left-side or right-side charging upper. The casing will always eject to the right regardless of configuration.