The R.EX Riser is a low profile, lightweight riser for AR platforms. Set at the ideal height for co-witnessing while using the SI Reflex Exoskeleton mount with either A2 height, or Sidewinder sights (without spacer), the REX Riser is versatile and provides and solid mounting platform. While optimized for use with the R.EX Mount, the universal Picatinny pattern can be used with many other optics that can be mounted on picatinny sections.

Strike Industries R.EX Riser Picatinny mount for M4 GBB
- Low profile rail riser
- Lightweight, 2 0z total installed co-witness height.
- Co-witness with A2 or Sidewinder Sight using R.EX Mount
- 3 picatinny slot sections