High Standard DM-101 .22 WMR Derringer, 3.5 Inch Over/Under, Hammerless DAO, Blue/Black, White Grips, Hamden Conn, with Original Clamshell Case
This High Standard Model DM-101 stands out as a compact .22 WMR over/under derringer with a hammerless double-action-only mechanism that alternates between barrels on successive trigger pulls. It was produced in Hamden, Connecticut, and comes with its original red fitted clamshell presentation case. The pistol is in very good overall condition with an excellent, mirror-bright bore, making it an appealing example of this classic two-shot design.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Overall Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Details: There are minor handling marks from previous use. Please refer to the photos for detailed views of the surfaces and finish.
What's Included
- Original box — red fitted clamshell presentation case with molded interior
The DM-101 uses a hammerless DAO system that fires one barrel per trigger pull, automatically alternating between the over/under barrels. The break-open barrel set is released via a left-side latch, simplifying loading and unloading.
Its compact, micro-size profile pairs a 3.5-inch barrel set with an overall length of approximately 5.125 inches. Sighting is straightforward with a fixed trench/channel system along the top rib.
The pistol wears a blue/black finish with polished flats and smooth white "ivory-color" synthetic grip panels that provide a clean, period-correct appearance.
Rollmarked "Hamden, Conn., U.S.A.," this U.S.-made derringer reflects the High Standard design known for its alternating-barrel firing sequence and streamlined, hammerless profile.

