When Quality Arms decided we would build a side charging upper, we went with it! We will tell you we have offered this upper to everyone we meet to feel the cycling action and we consistently hear how smooth this upper is! We offer this upper on our hunting series guns, which provides ease of charging a round while in the field. Now offered as an upper kit which includes the following: upper receiver, carrier, charging handle, gas plug, bolt and bolt release. ATTENTION!! Our Right Eject Uppers are ejecting right and can be charged either on the right or left side! please understand this as you wil notice both sides having cuts in the upper.