DNT Optics QDM150 Multi-Functional QD Mount, 1.5 in
Mount for one thermal or NV line · QD · 1.5 in height · 4.2 oz · $111
QD mount
A quick-detach mount: a lever or throw clamp takes the scope off the rail without tools. Worth it only if it goes back to the same zero, so mark the rail slot.
Maker's full product title: "QDM150 Multi-Functional Quick Detach Mount 1.5″ Height".
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Optics it fits
DNT Optics says: Designed for HYDRA; compatible series "ZULUS / HYDRA / ThermNight"; title: "Compatible with ThermNight, Hydra and ZULUS HD V1 & V2"; "also compatible with optics from other brands that share matching mounting specifications". The ZULUS 4K (tube style, rings) and the HOUND monoculars are not named and not linked.
Maker says it fits
DNT Optics publishes the height from the rail to the optic's centerline for its own units on this mount; that figure is shown as published, for the units it names.
Specs
| Type | |
|---|---|
| Type QD mount A quick-detach mount: a lever or throw clamp takes the scope off the rail without tools. Worth it only if it goes back to the same zero, so mark the rail slot. | Mount for one thermal or NV line |
| Mounts to | |
| Clamps onto Picatinny and Weaver rails The slotted rails most mounts clamp onto. Picatinny (MIL-STD-1913) has evenly spaced slots of one width; Weaver slots are narrower and spaced irregularly. Weaver mounts fit Picatinny; the reverse not always. | PicatinnyInterface (rail side): "Picatinny Rail" |
| Quick-detach QD mount A quick-detach mount: a lever or throw clamp takes the scope off the rail without tools. Worth it only if it goes back to the same zero, so mark the rail slot. | Yes"Auto-Locking Latch": "simply press the latch and flip the lever" |
| Holds | |
| Holds | Picatinny railInterface (scope side): "Picatinny Rail"; "dual-sided Picatinny slots" for switching between rifle-mounted and handheld use; spec table lists a Picatinny adapter screw and a side plate screw (2 screw holes, 42 mm / 1.65 in spacing) |
| Geometry | |
| Height, as published Scope height over bore How far the scope's center sits above the barrel's center. It decides your cheek weld and the bullet's path at close range. We calculate only the part above the rail, where makers publish it. | 1.5 in (38.1 mm)1.5″ height from rail to optic centerline (measured with compatible DNT scopes). Measured: from rail to optic centerline (measured with compatible DNT scopes) |
| Where the height is measured | Ring center above the rail |
| Cantilever Cantilever mount A one-piece mount whose rings sit forward of the rail clamp, usually about 2 in. It moves the scope forward so a thermal's short eye relief works on an AR-15's flat-top rail. | Not stated |
| Forward offset Cantilever mount A one-piece mount whose rings sit forward of the rail clamp, usually about 2 in. It moves the scope forward so a thermal's short eye relief works on an AR-15's flat-top rail. | Not published |
| Length | 2.2 in (55 mm) |
| Torque | Picatinny adapter screw (flat-head T25 Torxplus M5×10×9.8) 35 in-lbs; side plate screw (pan-head T25 Torxplus M5×20×9.25) 30 in-lbs |
| Weight and build | |
| Weight Weight How heavy the device is. Check whether the maker weighed it with or without the battery, because brands do it differently. | 0.3 lb (0.12 kg)119 g / 4.20 oz (with Picatinny Adapter) |
| Material | 6063 aircraft-grade aluminum alloy, hard-anodized matte black |
| Buying | |
| Made in | Not published |
| Warranty Warranty How long the maker promises to repair or replace a faulty unit. Check whether it needs registration and whether it passes to a second owner. | Not published |
| Maker part number | QDM150 |
| US price US price The price we found for the unit in the US, with where it came from and when. Prices change often, so treat it as a snapshot. | $111DNT US store (us.dntoptics.com), compare-at $135.99; listed with a 1-2 week lead time |
Dimensions (L × W × H) 55.0 × 57.5 × 22.5 mm / 2.17 × 2.26 × 0.89 in. DNT spec table: return-to-zero accuracy ≤0.3 mil, zero maintenance ≤0.1 mil, recoil rating 800 Gs / .50 BMG, operating temperature −20 to 50°C. DNT: "Earlier versions of the TNC225R feature a square mounting base... not compatible with the QDS150 and QDM150". The HYDRA and HYDRA LRF pages list a QDM150 in the package contents ("Included Free: QDM150 Quick Detach Mount ($110.99 Value)").
Source: DNT US store, QDM150 page (spec table), DNT global store, QDM150 page, DNT US store, HYDRA-Mini HS210M page (names QDM150, QDS150, QDF170).
Added October 12, 2026 · Specs last checked October 12, 2026