anTi 2.0 – An Ultralight action made for rifle builders


Weighing as little as 20.2 oz.

If you watch your scales as closely as you watch your targets, check out the Defiance anTi 2.0 — a minimalist’s take on Defiance’s legendary precision actions. Weights comparable to titanium actions but made of 416 stainless steel and 4340 chrome-moly steel. Featherweight. No compromises.

Available only to rifle builders.


  • Receiver made of pre-hardened aircraft-certified 416 stainless steel
  • Bolt made of pre-hardened aircraft-certified 4340 chrome moly with recessed bolt lugs, utilizing a mini-16 extractor and plunger ejector
  • Receiver barrel threads are 1.0625” X 16 T.P.I. (Rem. 700 thread dia. and pitch)
  • Includes 20 MOA Mil Spec 1913 (Picatinny) scope mount, custom made from 7075 aluminum, 8-40 screws, and 1/8” hardened recoil pins (1.6 oz.)
  • Includes pinned .253” recoil lug made of hardened 416 Stainless (1.2oz)
  • Action does not have a guaranteed headspace.
  • Actions available in:
    • Medium (Rem. SA)
    • Long (Rem. LA)
  • Medium length actions available in .390”, .480”, and .550” bolt face
  • Long length actions available in .480” and .550” bolt face
  • Available in right & left hand
  • Works with hinged floorplates and center feed detachable magazines
  • .308 available with AICS/AW magazine cut (detachable mag only)
  • Approximate weights for complete action*
    • 20.2 oz – Medium (Rem. SA)
    • 23.2 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


  • 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.
  • Receiver machined from one piece of pre-hardened 416SS.
  • Wire EDM-cut, full-length lug ways result in smooth bolt operation.
  • Primary extraction design significantly increases initial extraction and ensures smooth bolt cycling.


  • Hand
    • Right
    • Left
  • Bolt Face
    • .223 Rem (.390)
    • .308 Rem (.480)
    • .300 WM/RUM (.545)
  • Magazine Cut
    • BDL for use with hinged floorplate or center feed magazines (Wyatt’s cut)
    • AI/AW Medium action only (DBM only)

Everything Included

  • Ultra-lightweight precision round receiver body pinned for recoil lug
  • 20 MOA Mil Spec 1913 picatinny scope mount, made from 7075 aluminum
  • .253” 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
  • One-piece firing pin and spring
  • Cocking piece
  • Aluminum bolt shroud
  • Trigger pins


MEDIUM ACTION (Model 700™ SA Length) – MSRP $1425

LONG ACTION (Model 700™ LA Length) – MSRP $1425

  • Available only to rifle builders.
  • Inquire about special builder price. Additional discounts do not apply.
  • Includes 20 MOA 7075 aluminum scope rail and stainless .253” recoil lug.
  • Builder must purchase 25 anTi 2.0 (and/or Tenacity 2.0) actions per year. (Multiple deliveries OK.)
  • No retail sales
  • No resellers

The anTi 2.0 is available to send out for Nitride coating.

The Defiance Guarantee

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