Defiance Machine - AnTi X Action

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Product Information



Weighing as little as 21.9 oz.

As Defiance continues to innovate and find new ways to better serve their customers, they have pushed the envelope again. The anTi X is an ultra-lightweight action with integral scope mounts and recoil lug that shares the same guaranteed head-space measurement as the Ruckus, Tenacity, and anTi custom precision rifle actions. Using pre-hardened 416R stainless for the receiver and a 4340 chrome moly bolt, gives customers the smoothness, reliability and longevity that they have come to expect from Defiance.

Innovative weight reduction. Premium Materials. No compromises.

Standard Options as ordered 

  • Rear Tang - Standard Tang
  • Bolt Knob - .350" OD Hollow AnTi knob
  • Bolt Body - .700" Bolt
  • Bolt Nose - Recessed
  • Bolt Face - 
    • .480" - Standard .308 style bolt face
    • .550" - Magnum/RUM/PRC/SAUM
  • Bolt Fluting - Deep Flutes
  • Bolt Shroud - Remington Style
  • Magazine Cut - BDL Hinged Floorplate (Will also work with center feed magazines such as HS Precision or Wyatt's Outdoor magazines)
    • ***.550 in MAG and .550 in RUM/PRC have same bolt body, but the RUM/PRC receiver is cut to accommodate the RUM/PRC cartridge in a BDL assembly. RUM/PRC Receiver body WILL NOT WORK with Magnum cartridges such as .300WM.***
  • Extractor - M16 Style
  • Nitriding - Nitrided Bolt Body
  • Scope Rail - 20 MOA


  • Approximate weights for complete action*
    • 22.1 oz – Medium (Rem. SA)
    • 23.4 oz – Long (Rem. LA)

    *complete action consists of stainless-steel receiver, one-piece 4340 CM bolt, handle/knob, firing pin assembly with aluminum shroud, and side bolt release

  • Receiver made of pre-hardened aircraft-certified 416 stainless steel with integral recoil lug.
  • 4340 chrome moly bolt made in one operation, enabling guaranteed headspace +/- .001″
  • Recessed bolt lugs, Mini-16 extractor, and plunger ejector.
  • 20 MOA Skeletonized Integral rail
  • Receiver barrel threads are 1.0625” X 16 T.P.I. (Rem. 700 thread dia. and pitch)
  • Bolt face available .480″, .550″
  • Available in right & left hand
  • Works with hinged floorplates and center feed detachable magazines


  • All material pre-hardened prior to machining to prevent changing tolerances during heat treat.
  • Bolt machined from one piece of pre-hardened 4340 chrome moly in one operation enabling guaranteed headspace +/- .001″.
  • Receiver machined from one piece of pre-hardened 416SS.
  • Wire EDM-cut, full-length lug ways with anti-bind result in smooth bolt operation.
  • Primary extraction design significantly increases initial extraction and ensures smooth bolt cycling.

Everything Included

  • Extensively machined Receiver body with integral rail sections and integral recoil lug
  • Bolt stop/side bolt release, spring, pin
  • Extra light one-piece bolt
  • anTi X Deep bolt fluting
  • Mini-16 extractor
  • Hollow anTi bolt knob
  • Fluted firing pin/spring
  • Cocking piece
  • Aluminum bolt shroud
  • Trigger pins

The Defiance Guarantee

If you don’t like it, Defiance will change it, swap it, or refund your money. They want all of their customers to be 100% satisfied with the quality of their product. They'll even pay the return shipping.


  • Red Hawk Rifles LLC. will transfer ownership of any firearm/receiver ONLY to individuals or agencies in possession of a valid Federal Firearms License (FFL). We cannot ship to individuals without a valid FFL.
  • It is the buyer’s responsibility to check and comply with local, state, and federal laws. The buyer assumes all legality, liability and responsibility for the condition, use & security/storage of the firearm/receiver purchased.
  • It is the buyer’s responsibility to contact the FFL dealer. Be aware that it is customary for your local dealer to charge a transaction fee at the time you pick up your purchase.This transfer fee is strictly between you and your local dealer. It is your responsibility to check with your local dealer concerning any policy of this kind and concerning your obligations.
  • You the buyer are responsible for forwarding a copy of the FFL and all pertinent contact information to Red Hawk Rifles LLC. FFL’s can be sent to:

Fax: 970-242-6177

  • 5

    Defiance Anti-X

    Beau Dollar on Jan 30th 2024

    Can’t wait to get this in my MDT HNT26 chassis and spin up a 7PRC to see how lightweight the newest 7mm offering can be.

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