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NcStar Pro Series AR Lower Receiver Wrench VTARW4

Out of stock

This is NC Star's crack at making the perfect AR armourers wrench. They feel well made and does basically everything in the lower receiver

There is a square hole for a 1/2" torque wrench (not included) to get the perfect amount of torque on your castlenut (though many people use a calibrated wrist).

We also sell barrel nut grease to prevent thread seizing.


  • Pro Series AR15 Lower Receiver Wrench - heavy duty purpose built M4 castle nut wrench for collapsible stock buffer tubes
  • Large heavy duty cross section makes it easier on the hands to work on your AR lower receiver.
  • You can remove/install M4 castle nuts with ease with this AR wrench. The castle nut wrench slips over the castle nut and nearly encompasses the castle nut for a more secure fit when installing or removing the M4 castle nut. Makes for assembling/installing collapsible stock buffer tubes a super easy task.
  • The other end of the wrench is for installing/removing A2 Rifle buffer tubes (¾")".
  • 1/2" and 3/8" drive compatible, for torquing your barrel nuts to the proper torque specifications.
  • All the tools are Clearly Labeled.
  • Hole at the end is for hanging
  • Steel Construction
  • Length: 12.5"
  • Weight: 18 oz.

You get:

  1. AR-15/AR-10 armourer's multi-tool for lower receiver 

Compatible with:

  • Buffer tube
  • Buttstock castle nut
  • Muzzle devices with 3/4" 
  • A2 buffer tubes with the old 3/4" flats

NOT compatible with:

  • Any barrel nuts to do with the upper receiver  

Manufacturers Part Number


UPC: 848754008381