Scope mounts / AGMDiscontinued
AGM AGM-2120 ADM Single Lever QD Mount for Rattler V2
Mount for one thermal or NV line · QD · 3.5 oz · $159
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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Optics it fits
AGM says: "the advanced base for the new AGM RattlerV2 thermal scopes family". Rattler-C V2 (clip-on) is not linked.
Maker says it fits
| Optic | Who says so | Tube center above the rail (calculated) |
|---|---|---|
| AGM Rattler V2 19-256Thermal scopes | AGM-2120 is "the advanced base for the new AGM RattlerV2 thermal scopes family" | AGM does not publish the height of the unit’s optical axis above its mounting base |
| AGM Rattler V2 25-256Thermal scopes | AGM-2120 is "the advanced base for the new AGM RattlerV2 thermal scopes family" | AGM does not publish the height of the unit’s optical axis above its mounting base |
| AGM Rattler V2 25-320Thermal scopes | AGM-2120 is "the advanced base for the new AGM RattlerV2 thermal scopes family" | AGM does not publish the height of the unit’s optical axis above its mounting base |
| AGM Rattler V2 25-384Thermal scopes | AGM-2120 is "the advanced base for the new AGM RattlerV2 thermal scopes family" | AGM does not publish the height of the unit’s optical axis above its mounting base |
| AGM Rattler V2 35-384Thermal scopes | AGM-2120 is "the advanced base for the new AGM RattlerV2 thermal scopes family" | AGM does not publish the height of the unit’s optical axis above its mounting base |
| AGM Rattler V2 35-640Thermal scopes | AGM-2120 is "the advanced base for the new AGM RattlerV2 thermal scopes family" | AGM does not publish the height of the unit’s optical axis above its mounting base |
| AGM Rattler V2 50-640Thermal scopes | AGM-2120 is "the advanced base for the new AGM RattlerV2 thermal scopes family" | AGM does not publish the height of the unit’s optical axis above its mounting base |
Tube center above the rail is calculated only when the mount maker says where its height is measured from and the optic maker states a tube diameter; each blank says which figure is missing.
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 |
| Built by | American Defense Manufacturing (ADM) |
| 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. | Picatinny"affixes it to any Picatinny rail system without the use of additional tools" |
| 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. | YesSingle lever QD (title); ADM mounts "offer tightening adjustability with no tools required" |
| Holds | |
| Holds | Rattler V2 base"the advanced base for the new AGM RattlerV2 thermal scopes family"; attaches to the scope |
| 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. | Not published |
| 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 |
| 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. | 0.2 lb (0.1 kg)98 g (3.5 oz) |
| Material | aluminum |
| 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 | AGM-2120 |
| 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. | $159AGM store (agmglobalvision.com) last listed price; the listing is tagged Archive and shows unavailable, store SKU 6306X1201 |
Dimensions published as "121 × 50 × 26 mm (4.7 × 2.0 × 1.0 in)" with no axis labels, so lengthMm is null. Status set to discontinued because AGM's store tags the page Archive and it cannot be bought; AGM does not say discontinued in words.
Source: AGM store, AGM-2120 page.
Added October 12, 2026 · Specs last checked October 12, 2026