High-tube adapters have a comb height equivalent to an AR-15 and require an optics rail (included). High tube adapters allow proper cheek weld and eye alignment with popular optics such as an ACOG or Leupold CQT and others.
The Mesa Tactical Telescoping Stock Adapter Shotgun Conversion Kit includes the following components:
High-tube AR Adapter, Adapter Mount Picatinny rail, Hogue Over-molded Pistol Grip, Crosshair Hydraulic buffer Tube, Quick Release push button swivel, Multi-tool and all necessary hardware