Austin & Halleck Model 420 Synthetic .50 Cal Inline Muzzleloader – Rare Limited-Run, Cold-Drawn Spanish Steel Barrel
This Austin & Halleck Model 420 Synthetic stands out as a rare, collectible inline muzzleloader from the early 2000s. Built during the company’s final production years, it features a heavy cold-drawn Spanish carbon steel barrel, a versatile three-way ignition system, and a factory 1-MOA accuracy guarantee. Its combination of modern inline engineering and limited availability makes it notable for shooters and collectors alike.
Condition
Overall Condition: Good condition, showing some signs of prior use and handling.
Bore Condition: Good – Clean, well-maintained, minor wear marks.
Rifling Condition: Good Rifling – Intact, well-defined lands and grooves.
Specific Condition Notes: The bore shows light surface rust that does not appear to affect the sharp rifling. External metal and stock surfaces display typical handling marks consistent with careful field use.
What’s Included
- Austin & Halleck Model 420 Synthetic .50 caliber inline muzzleloader rifle
The Model 420 uses an inline bolt-action percussion system that seals the breech for reliable ignition and simplified cleaning. Its convertible three-way ignition accepts #11 percussion caps, musket caps, or 209 shotgun primers, giving the shooter flexible options for powder and projectile combinations.
The 26-inch octagon-to-round barrel is machined from cold-drawn Spanish carbon steel, cut with eight grooves at a 1:28 RH twist. This twist rate stabilizes modern sabots and conicals, and the factory guaranteed 1-MOA accuracy underscores the rifle’s precision potential.
An adjustable, match-grade trigger breaks at approximately 3.5 lb, paired with a trigger-block safety for confident field handling. The straight-comb synthetic stock features molded fleur-de-lis checkering, an integral trigger guard, and a rubber recoil pad, delivering a solid, weather-resistant platform.
Hoodless ramp front and adjustable rear leaf sights come standard, though the receiver is drilled and tapped should the buyer wish to add optics. With Austin & Halleck’s closure in the mid-2000s, surviving Model 420 rifles remain scarce, enhancing this example’s collectible appeal.