GOPerfect,,,,,it was individual pieces they sent you correct? Like a piece or two for the receivers, a piece for the handguard, ect? If I'm right, were the pieces for the receivers a little oversized? Im wondering because if I place an order,,,I was wondering if the AR15 pieces would fit my RPR being that the size of the RPR is more the size of a AR10,,,which is slightly bigger than a AR15.