QRB WORKS FOR ALL CALIBERS THAT OPERATE ON AR-15 UPPER RECEIVERS
The QRB Kit can only be used on Barrels with a maximum outside diameter of 0.985" and Free Float Hand Guards with a maximum width of 2.0" Also the QRB will add 1.5" to the length of your free floating hand guard.
For Caliber or Barrel Length Change - Includes Barrel Plate and Gas Tube.
The 2-Pin option is the Military Model Currently in use by the United States Air Force. Proudly made in the USA - that means something to us.
NOTE: If you have a GEN-1 QRB, The 2-Pin version will not work.
Cry Havoc Tactical is a veteran owned and operated company, producing high quality tactical takedown kits for AR-15s. A complete line of parts and uppers available at Openrange in Crestwood, KY.