Antique percussion long arms occupy a unique place where historical craftsmanship meets practical shooting heritage. For collectors, shooters, and museums, finding a serviceable example with original markings and functioning parts is rare — and when one surfaces, it deserves close inspection from a tactical and preservation perspective.

U.S. MILITARY & COMMERCIAL LONG ARMS MFG’S J. HARDER HALF STOCK PERCUSSION RIFLE WITH HENRY LEMAN LOCK PLATE is a circa 1850s–1860s single-shot percussion rifle that blends mid‑19th century American manufacturing with reliable mechanical design. This rifle features a .45 caliber bore and a 34″ octagonal barrel with a very good bore and strong rifling visible — key indicators for both value and shooting potential. The barrel carries a brown patina and is marked “J. Harder/Lock Haven Pa.” while the lock plate is stamped “Leman/Lanctr. PA” between decorative floral scrolls. Oxidation at the bolster, a stock with nicks, dings and a hunting dog carved on the check rest, and a functional double set trigger round out the original characteristics (AL5975).

Why this rifle matters to collectors and shooters

The combination of maker markings and a Henry Leman lock plate ties the rifle to recognized 19th‑century American production. The .45 caliber was common for hunting and field use in that era — offering manageable recoil, good ballistic performance for period loads, and compatibility with modern black powder reproductions for supervised shooting. Condition notes such as the brown barrel patina and bolster oxidation are expected for an original piece and can influence both display and firing decisions.

Mechanical integrity and shooting considerations

Strong rifling and a very good bore are critical for accuracy; this rifle’s rifling suggests it can be safely preserved and potentially fired with appropriate loads and certified inspection. The double set trigger is an advantage for precision at longer shots, and the report that action functions correctly is reassuring for responsible owners who may want to shoot under expert supervision. Given its Single Shot category and antique status, consult a qualified gunsmith before any live‑fire use.

For those interested in ownership, the listed price is $1,250.99. View product details and pricing on the shop page to see full imagery and purchasing steps. View product details and pricing

Responsible acquisition and care

When acquiring a historic percussion rifle, emphasize inspection of the bore, lockwork, and stock integrity. Preserve original markings like “J. Harder/Lock Haven Pa.” and “Leman/Lanctr. PA” — they are central to provenance. Whether you’re a collector focused on display or a cautious shooter aiming for controlled firing, this rifle represents a tangible link to mid‑19th century American arms manufacture.

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