Crosstac AR-15 Armorer Block Full Kit

Item Code: 135200
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    This kit includes the hammer block and roll pin punch

    Precision machined double-sided AR-15 armorer block. This block is loaded with features for AR gunsmithing work. An absolutely indispensable piece of gear for any armorer or hobbyist armorer with an AR-15. Virtually indestructible and resistant to all oils and solvents.


  • CNC precision-machined.
  • Made using solid HDPE. Super tough ultra high molecular weight high density polyethelyne.
  • Resists all common solvents.
  • Holds uppers, lowers.
  • Supports receiver when driving trigger guard pin.
  • Holds bolt catch compressed when driving pin (when used with hammer block, see pics below).
  • Hammer block allows realistic tuning of trigger work.
  • 100% USA Made by the dedicated folks at Crosstac.
  • Clamps into vice while securely holding an upper or turn it over and place it into a lower receiver.
  • Supports lower receiver "ears" when driving cross pin for trigger guard.
  • Optional hammer block snaps in to the main block when clamped into a lower receiver. Allows fine tuning of trigger pull without damaging receiver. Eliminates need to catch hammer when testing trigger pull. Also adds support for holding the lower vertically & will hold bolt catch captive to allow driving of retaining pin easily.
    Crosstac AR-15 Armorer Block Full Kit
    WARNING: This product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to
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