Vism Upper Receiver Block

Vism Upper receiver block is designed to fits AR15/M4 receivers to help with assembly and general maintenance of AR receivers.

Features:

• • The modular upper receiver block can be used in several ways for many different maintenance tasks
  • You may use just the lower half of the block by attaching it quickly to the upper receiver with the two provided receiver pins
  • This allows you to clamp the AR upper receiver to a vise for maintenance work
  • Bolting the two halves of the upper receiver block fully supports the upper receiver to prevent damage from torque twisting forces when installing or removing barrels from the receiver
  • The upper half of the block inserts into the receiver just like a bolt carrier group
  • The bottom half of the block can be bolted together with the upper half with the provided steel bolts
  • This fully supports the inside and the bottom of the receiver and it also leaves the receiver optics rail open for mounting accessories and optics
  • Unlike other upper receiver blocks that bolt/clamp to the exterior of the AR receiver
  • The upper receiver block also has a hole through the length of the block to act as a bore brush guide for cleaning out the bore of the barrel

Constructed with blue anodized Aluminum.