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TANDEMKROSS

TANDEMKROSS Krossfire Bolt (Ruger Mark IV / 22/45)

Lightweight EDM-machined replacement bolt for the Ruger Mark IV with reduced reciprocating mass for faster cycling and lower felt recoil.

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Quick Specs

Price
$209
Weight
N/A
Brand
TANDEMKROSS
Category
lower-part

Features

  • EDM-machined steel bolt
  • Reduced reciprocating mass vs factory
  • DLC and color-anodized halo options
  • Drop-in install
  • Fits Mark IV and Mark IV 22/45
  • TANDEMKROSS P/N TK26N0540BWB1

Capability Boosts

CQB+2
Reliability+1

Recommended For

Home Defense+3
first pistol+3
new shooters+3
self defense+3
bear defense+3
Competition+2

+24 more

Where to Buy

Compare current prices and availability from retailers we work with.

Optics PlanetBest available

TANDEMKROSS Krossfire Bolt for Ruger Mark IV and 22/45, Black/Black, TK26N0540BWB1

$239.99
In stock
2d ago
View offer

Compatibility Tags

family: handgunframe: ruger-mk4

Overview

The TANDEMKROSS Krossfire Bolt is a premium replacement bolt assembly for the Ruger Mark IV that drops reciprocating mass for faster cycling and lower felt recoil. EDM-machined steel construction throughout, with reduced cuts and lightening pockets that shave weight from the factory bolt while preserving the locking and feeding geometry. The result is a slide that returns to battery measurably faster, which translates directly to lower split times for competition shooters.

The improvement is real but incremental. A casual range shooter will not feel the difference; a Steel Challenge shooter chasing tenths between strings will. This is a deliberate-purchase upgrade for shooters who already own the Volquartsen Accurizing Kit and are looking for the next meaningful gain. Drop-in fit on every Mark IV variant including the 22/45, 22/45 Lite, 22/45 Tactical, and the steel-frame Target, Hunter, and Competition.

Available in black-on-black (TK26N0540BWB1) and black-with-red-halo (TK26N0540BWR1). Functionally identical, the halo is a cosmetic accent. Note that aftermarket bolts can complicate Ruger warranty discussions, so keep the factory bolt in case you need to send the pistol back. The black-on-black SKU is the clean baseline configuration; color-halo variants are cosmetic.

Key Features

  • EDM-machined steel bolt assembly
  • Reduced reciprocating mass vs factory
  • Faster cycling and reduced muzzle rise
  • Drop-in fit on every Mark IV variant
  • Black-on-black or black-with-red-halo finish options
  • Made in USA, lifetime guarantee

Pros

  • +Reduced reciprocating mass speeds cycling and reduces muzzle rise
  • +EDM-machined steel construction
  • +Drop-in fit (no fitting required)
  • +Anodized halo color options for build aesthetics
  • +Baseline black-on-black configuration stays visually subtle

Cons

  • Premium price ($209) for a single-part upgrade
  • Cycling improvements are noticeable but small in absolute terms
  • Aftermarket bolt complicates warranty discussions with Ruger

Detailed Specifications

Material
EDM-machined steel
compatibility
Ruger Mark IV, Mark IV 22/45
installation
Drop-in
finishOptions
Black-on-black (TK26N0540BWB1), Black-with-red-halo (TK26N0540BWR1)
countryOfOrigin
USA

Compatible Platforms

+193 more

Pairs Well With

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