The 4-16x44 Meostar R1 has a 30mm maintube diameter, with its reticle placed in the front focal plane to allow the user to employ the distance estimation scales and pitches. Targeting smaller game at longer distances is quite easy with the reticle location in the rear focal plane. The 4-16x44 Meostar R1 has a 44mm diameter objective lens to gather much needed light, and is intended primarily for tactical operations.