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DNT Optics QDF170 Flip-to-Side QD Mount, 1.7 in

Mount for one thermal or NV line · QD · 1.7 in height · 4.7 oz · $166

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.

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Maker's full product title: "QDF170 Flip-to-side Quick Detach Mount 1.7″ Height".

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Optics it fits

DNT Optics says: Designed for NVMD; compatible series "NVMD / HYDRA (Excl. HS650, HS650R)". The HS210M page also names it.

Maker says it fits

OpticWho says soTube center above the rail (calculated)
DNT Optics Hydra HS219Thermal scopesCompatible series "NVMD / HYDRA (Excl. HS650, HS650R)"; with HYDRA it "supports flip-to-side stowage only"1.7 in (43.2 mm)The mount maker’s own figure for its units on this mount
DNT Optics Hydra HS225Thermal scopesCompatible series "NVMD / HYDRA (Excl. HS650, HS650R)"; with HYDRA it "supports flip-to-side stowage only"1.7 in (43.2 mm)The mount maker’s own figure for its units on this mount
DNT Optics Hydra HS325Thermal scopesCompatible series "NVMD / HYDRA (Excl. HS650, HS650R)"; with HYDRA it "supports flip-to-side stowage only"1.7 in (43.2 mm)The mount maker’s own figure for its units on this mount
DNT Optics Hydra HS335Thermal scopesCompatible series "NVMD / HYDRA (Excl. HS650, HS650R)"; with HYDRA it "supports flip-to-side stowage only"1.7 in (43.2 mm)The mount maker’s own figure for its units on this mount
DNT Optics Hydra HS635Thermal scopesCompatible series "NVMD / HYDRA (Excl. HS650, HS650R)"; with HYDRA it "supports flip-to-side stowage only"1.7 in (43.2 mm)The mount maker’s own figure for its units on this mount
DNT Optics Hydra LRF HS225RThermal scopesCompatible series "NVMD / HYDRA (Excl. HS650, HS650R)"; with HYDRA it "supports flip-to-side stowage only"1.7 in (43.2 mm)The mount maker’s own figure for its units on this mount
DNT Optics Hydra LRF HS335RThermal scopesCompatible series "NVMD / HYDRA (Excl. HS650, HS650R)"; with HYDRA it "supports flip-to-side stowage only"1.7 in (43.2 mm)The mount maker’s own figure for its units on this mount
DNT Optics Hydra LRF HS635RThermal scopesCompatible series "NVMD / HYDRA (Excl. HS650, HS650R)"; with HYDRA it "supports flip-to-side stowage only"1.7 in (43.2 mm)The mount maker’s own figure for its units on this mount
DNT Optics Hydra Mini HS210MThermal scopesHS210M page: "use compatible DNT quick detach mounts in 1.5-inch (QDM150, QDS150) or 1.7-inch (QDF170) heights"1.7 in (43.2 mm)The mount maker’s own figure for its units on this mount
DNT Optics NVMD-C200Night vision scopesDesigned for NVMD: "Engineered specifically for the NVMD scope"; also in the NVMD-C200 package contents1.7 in (43.2 mm)The mount maker’s own figure for its units on this mount

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.

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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.

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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.

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Yes"Auto-Locking Latch"; "Tool-less adjustment with a single thumbscrew"; "press the latch and flip the lever"
Holds
HoldsMaker's own interfaceInterface (scope side): "Scope Slot with Screw Holes" (2 screw holes, 28 mm / 1.10 in spacing); flips the optic to the side
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.

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1.7 in (43.2 mm)1.7″ height from rail to optic centerline. Measured: from rail to optic centerline
Where the height is measuredRing 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.

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Yes
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.

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Not published"cantilever structure"; no offset figure
Length3.9 in (98 mm)
TorqueFlat-head T25 Torxplus M5×10×9.8 screws, 35 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.

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0.3 lb (0.13 kg)133 g / 4.69 oz
Material6063 aircraft-grade aluminum alloy, hard-anodized matte black
Buying
Made inNot 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.

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Not published
Maker part numberQDF170
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.

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$166DNT US store (us.dntoptics.com), compare-at $220.99

Dimensions (L × W × H) 98.0 × 48.5 × 31.0 mm / 3.86 × 1.91 × 1.22 in. Typical use: "Flip Mount for red dot magnifier". Enables the NVMD's Flip-to-side Action Camera and Flip-initiated Standby; "When paired with the HYDRA, the QDF170 supports flip-to-side stowage only." 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.

Source: DNT US store, QDF170 page (spec table), DNT US store, NVMD-C200 page (package contents), DNT US store, HYDRA-Mini HS210M page.

Added October 12, 2026 · Specs last checked October 12, 2026

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