Holosun Open Reflex Optic HS510C Shoulder Holsters but enclosed all around similar

but enclosed all around similar to the phantom or Eidolon design

These fold up small then the original and are held closed with Velcro straps

includes Rail Locating Keys for Glock style

Climbing lugs

Holosun Open Reflex Optic HS510C Shoulder Holsters but enclosed all around similarThe HS510C is a versatile open reflex optic designed for long gun applications. HS510C is at home on carbines, PCCs, and shotguns due its durable design. HS510C features and aluminum housing with titanium hood for added shock resilience and includes a QD absolute co witness mount (1. 41 dot height). HS510C is packed with Holosun innovation including Solar Failsafe, Shake Awake, MRS (Multi Reticle System), Red Super LED with up to 50k hour battery