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Zero™ Trigger

The Zero™ AR-15 trigger features a patented design and unique manufacturing process that guarantees it operates with zero pre- and post-travel and functions with zero interference.

On the design side, hardened set screws are installed through the bottom of the trigger housing and are finely tuned during assembly to mechanically eliminate any take-up and over-travel. In addition, the trigger tail is modified so that the tuning of the rear set screw removes any slop with the selector. On the manufacturing side, the trigger, hammer, and disconnect are EDM cut and then polished with brass wire to a micron finish in all critical contact areas for a friction-less engagement. Finally, the trigger’s reset is both short and positive to facilitate faster shooting during training or competition.

Available in two pull weights and two finish options. Pull weight options include 3 lbs and 4.5 lbs. Finish options for the internal components (trigger, hammer, and disconnect) include all black nitride and all NP3. Black Nitride is a heat treatment process that enhances corrosion resistance, improves lubricity, and leaves a fine black finish on the surface of the metal. NP3 is a plating of electroless nickel co-deposited with Teflon that provides remarkable lubricity and takes on the appearance of the base metal.

In short, all of the features of the Zero™ trigger are designed to offer a shooting experience that is exceptionally smooth, crisp, and fast.


*0.1560 inch diameter trigger pins are required. Undersized and out-of-spec trigger pins will cause the trigger to malfunction.


  • Single stage drop in trigger for AR-15
  • Short reset design
  • Fits any MIL-SPEC AR-15 lower receiver

Trigger Pull Weight: 4.5
Shoe Profile: Flat
Trigger Material: A2 Tool Steel
Trigger Finish: Black Nitride
Disconnect Material: A2 tool steel
Disconnect Finish: Black Nitride
Housing Material: Aerospace Grade Aluminum
Housing Finish: Black Anodize







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Blackout Defense 4.5lb Trigger Performance Series

Our Price:

Blackout Defense 4.5lb Trigger Performance Series $205.00
  • MSRP$219.99
  • SKULRPBOD92214
  • MPN92214
  • UPC850023922144

Total in stock: 0

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