Weatherby Mark XXII .22 LR Semi-Auto Rifle — Nikko (Japan) Production, Tube-Fed, 24 in Barrel, Walnut Monte Carlo Stock
This Weatherby Mark XXII is a Japanese Nikko-production, tube-fed .22 LR from the 1970s, combining refined Weatherby styling with distinctive mechanical features. Notable elements include the under-barrel tubular magazine, AUTO/SS selector for semi-auto or single-shot use, and a 24-inch steel barrel with a recessed crown. It bears "South Gate, Calif., Made in Japan" markings and the U.S. 3,155,004 patent on the receiver, with the Nikko-associated T-prefix serial format.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Specific Condition Notes: There are some mild to moderate scuffs and areas of wear.
Bore Overall Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
What’s Included
- Weatherby Mark XXII Nikko-production .22 LR semi-automatic rifle
The Nikko-built Mark XXII stands out for its under-barrel tubular magazine and the AUTO/SS selector that allows either semi-automatic operation or single-shot firing. The right-side, knurled charging handle travels in an oval ejection-port slot, a hallmark of this Japanese variant.
The rifle features a 24-inch steel barrel with a recessed crown and traditional iron sights: a front ramp with brass bead paired with a barrel-mounted rear leaf. The action is blowback-operated and chambered in .22 LR with a 10-round capacity.
Stock work is classic Weatherby: a gloss-lacquered walnut Monte Carlo stock with a right-side cheekpiece, skip-line checkering, rosewood forend tip and grip cap with white/black spacers, a white diamond inlay, and sling swivel studs. A basketweave-textured brown buttplate completes the look.
Finish details include a deep blued receiver and barrel, with clear "South Gate, Calif., Made in Japan" markings and the U.S. 3,155,004 patent on the receiver. Production aligns with the 1973–1980 period, and the T-prefix serial format is associated with Nikko tube-fed Mark XXII rifles.