The MIROKU Ultra-Hi is a classic example of mid-century craftsmanship built for collectors and shooters who appreciate traditional black powder single-shot rifles. Its condition and specific markings make it both a display-worthy piece and a serviceable firearm for period-appropriate range work.
MIROKU Ultra-Hi is a .45 caliber black powder percussion cap rifle chambered with a 33 1/2″ octagonal barrel and hardwood stock. 
Overview for collectors and practical shooters
At the listed price of $750.99, this MIROKU Ultra-Hi represents a strong value for anyone seeking a historically styled .45 black powder rifle. The piece is described as very good overall for its age: minimal wear on the stock and grip, mild surface rust in the bluing that can be addressed with careful cleaning and oiling, and a clean, bright bore showing little powder residue. Note: no case is included and all firearms are listed as UNTESTED for firing function—please review the photos closely and contact the seller with any questions.
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Key features and why they matter
Barrel, markings, and proofing
The barrel is marked “MFG. For ULTRA-HI By Miroku Japan 4418” and “.45 CAL BLACK POWDER ONLY” with a visible PROOF TESTED stamp across the top. An octagonal 33 1/2″ barrel provides classic balance and a long sight radius—beneficial for accurate shooting with patched round balls or conicals in black powder disciplines.
Stock, fittings, and condition
Hardwood stock and fore grip with brass accents, a brass trigger guard, and a crescent butt plate give the rifle period-correct ergonomics and presentation. The description notes light wear on the stock and grip; these are cosmetic and consistent with age, while the striping and stampings remain crisp and legible (IF040708NMCOS3).
Use, maintenance, and suitability
This rifle is best suited for historical shooters, collectors, or those who practice traditional muzzleloader technique. The .45 black powder chambering is versatile for target and small- to medium-game applications when used responsibly and in accordance with local laws. Proper maintenance—bore cleaning, removing mild surface rust, and oiling exposed metal—will preserve function and appearance.
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People Also Ask
What makes this product stand out from competitors?
This product offers superior quality and innovative features that set it apart in the market. Its design focuses on both performance and reliability, making it a top choice for professionals and enthusiasts alike.
Is this product suitable for beginners?
Yes, this product is designed with user-friendly features that make it accessible to beginners while still offering advanced capabilities for experienced users.
What warranty or support is available?
The product comes with comprehensive warranty coverage and excellent customer support to ensure your satisfaction and peace of mind.
How does this compare to similar products in its price range?
This product offers exceptional value for its price point, providing features and quality that typically cost significantly more in comparable alternatives.
What maintenance is required?
Minimal maintenance is required thanks to the product’s durable construction and quality materials. Regular cleaning and occasional inspections will keep it performing optimally.
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