AR15 Forward Extension Spacer (fits QRP2/TNP/LRP) Air Purifiers The CompM4 has a top-mounted

The CompM4 has a top-mounted battery compartment while the CompM4s has a low battery compartment - this is the only difference between the sights

or for helmets without rear rails

10" Long glove protector includes pull strap with a non-metallic buckle and provides an excellent protection for rubber insulating gloves

Introduced by Zoll in 2001

AR15 Forward Extension Spacer (fits QRP2/TNP/LRP) Air Purifiers The CompM4 has a top-mountedSpacer for CompM4, CompM3 and PRO in conjunction with Base and Top Ring, Item No. 12194. Mount raises height of optical axis from 30 to 39 mm and brings sight 40 mm forwards. Screws and Allen key included.