Knight DISC Extreme .50 Cal Inline Muzzleloader, 26" Stainless Green Mountain Barrel, Laminated Thumbhole Stock, Fiber-Optic Sights
This Knight DISC Extreme stands out with its 26-inch stainless Green Mountain barrel, laminated thumbhole stock, and installed scope bases. It is a single-shot, bolt-action inline muzzleloader chambered in .50 caliber, built on a matte stainless receiver with adjustable fiber-optic sights. The barrel carries the circled M mountain stamp and U.S. Patent 6,189,253 marking, adding clear identifiers to this U.S.-made inline.
Condition
Overall Condition: Good condition, showing some signs of prior use and handling.
Bore Condition: Fair - Generally clean, some residue or smudges, slight corrosion.
Bore Rifling: Good Rifling - Intact, well-defined lands and grooves.
Specific Condition Notes: The rifle is in solid functional shape. There are light spots of pitting on the action and barrel. The bolt shows rust. The rifling is present with deep lands and grooves, with pitting visible within the bore.
What’s Included
- Knight DISC Extreme .50 caliber inline muzzleloader rifle
- Installed scope bases
- Adjustable fiber-optic sights (ramped green front, red rear)
The DISC Extreme uses Knight's D.I.S.C. 209-primer disc ignition system in a single-shot, bolt-action inline configuration. This setup delivers reliable primer alignment and straightforward loading with modern inline operation.
Its 26-inch stainless Green Mountain barrel features a recessed crown and the circled M mountain stamp. The barrel is also marked with U.S. Patent 6,189,253, providing clear, factory-applied details that identify this configuration.
The receiver is stainless steel with a matte finish and comes drilled and tapped with scope bases installed. Adjustable fiber-optic sights complement the setup, with a ramped green front and an adjustable red rear for bright sight reference.
The right-hand laminated hardwood stock in orange/gray "nutmeg" includes a thumbhole grip and cheekpiece for stable positioning. Sling swivel studs and a ventilated recoil pad round out the stock features for carry and comfort.
Made in the USA, this DISC Extreme brings together stainless construction, known Green Mountain barrel quality markers, and practical sighting and stock features suited to an inline .50 caliber muzzleloader.