OneLeaf OLSM30150 30 mm Cantilever Mount, 2 in Offset
One-piece scope mount · 30 mm, 1 in · 1.42 in height · 6.2 oz · $39
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.
Maker's full product title: "30mm/1 in Cantilever Riflescope Mount with 2-inch Offset for Commander NV400".
Check price
Affiliate links (Amazon, eBay): we may earn a commission. Prices change; the retailer's page is the current one.
Optics it fits
OneLeaf says: "Compatible with Commander NV400." The NV400 Eagle is not named and is not linked.
Maker says it fits
| Optic | Who says so | Tube center above the rail (calculated) |
|---|---|---|
| OneLeaf Commander NV400 4-52x50Night vision scopes | "Compatible with Commander NV400." | 1.4 in (36 mm) |
Interfaces match (calculated)
The optic maker's published mounting interface meets this mount's. That says the parts connect; it does not check eye relief, the length of tube free for the rings, or barrel clearance, and no maker has named the pairing.
| Optic | Why it matches | Tube center above the rail (calculated) |
|---|---|---|
| AGM Adder TS35-384Thermal scopes | 30 mm rings; AGM states a 30 mm tube | 1.4 in (36 mm) |
| AGM Adder V2 35-384Thermal scopes | 30 mm rings; AGM states a 30 mm tube | 1.4 in (36 mm) |
| AGM Adder V2 LRF 35-384Thermal scopes | 30 mm rings; AGM states a 30 mm tube | 1.4 in (36 mm) |
| AGM Adder V2 LRF 35-640Thermal scopes | 30 mm rings; AGM states a 30 mm tube | 1.4 in (36 mm) |
| AGM Adder V2 LRF 50-640Thermal scopes | 30 mm rings; AGM states a 30 mm tube | 1.4 in (36 mm) |
| AGM Adder V2 LRF 60-1280Thermal scopes | 30 mm rings; AGM states a 30 mm tube | 1.4 in (36 mm) |
| ATN ThOR 6 384 2.5-20xThermal scopes | 30 mm rings; ATN states a 30 mm tube | 1.4 in (36 mm) |
| ATN ThOR 6 384 3.5-28xThermal scopes | 30 mm rings; ATN states a 30 mm tube | 1.4 in (36 mm) |
Show all 55 interface matches
| ATN ThOR 6 640 2-16x | 30 mm rings; ATN states a 30 mm tube | 1.4 in (36 mm) |
| ATN ThOR 6 640 3-24x | 30 mm rings; ATN states a 30 mm tube | 1.4 in (36 mm) |
| ATN ThOR 6 LRF 384 3.5-28x | 30 mm rings; ATN states a 30 mm tube | 1.4 in (36 mm) |
| ATN ThOR 6 LRF 640 2-16x | 30 mm rings; ATN states a 30 mm tube | 1.4 in (36 mm) |
| ATN ThOR 6 LRF 640 3-24x | 30 mm rings; ATN states a 30 mm tube | 1.4 in (36 mm) |
| ATN ThOR LT 160 3-6x | 30 mm rings; ATN states a 30 mm tube | 1.4 in (36 mm) |
| ATN ThOR LT 160 4-8x | 30 mm rings; ATN states a 30 mm tube | 1.4 in (36 mm) |
| ATN ThOR LT 320 2-4x | 30 mm rings; ATN states a 30 mm tube | 1.4 in (36 mm) |
| ATN ThOR LT 320 3-6x | 30 mm rings; ATN states a 30 mm tube | 1.4 in (36 mm) |
| ATN ThOR LT 320 4-8x | 30 mm rings; ATN states a 30 mm tube | 1.4 in (36 mm) |
| ATN ThOR LT 320 5-10x | 30 mm rings; ATN states a 30 mm tube | 1.4 in (36 mm) |
| ATN ThOR LTV 256 1.5-4.5x | 30 mm rings; ATN states a 30 mm tube | 1.4 in (36 mm) |
| ATN ThOR LTV 256 2-6x | 30 mm rings; ATN states a 30 mm tube | 1.4 in (36 mm) |
| ATN ThOR LTV 256 3-9x | 30 mm rings; ATN states a 30 mm tube | 1.4 in (36 mm) |
| ATN ThOR LTV 256 4-12x | 30 mm rings; ATN states a 30 mm tube | 1.4 in (36 mm) |
| ATN ThOR LTV 320 3-9x | 30 mm rings; ATN states a 30 mm tube | 1.4 in (36 mm) |
| ATN ThOR LTV 320 4-12x | 30 mm rings; ATN states a 30 mm tube | 1.4 in (36 mm) |
| ATN ThOR LTV 320 5-15x | 30 mm rings; ATN states a 30 mm tube | 1.4 in (36 mm) |
| ATN ThOR LTV 640 2-6x | 30 mm rings; ATN states a 30 mm tube | 1.4 in (36 mm) |
| ATN ThOR LTV 640 3-9x | 30 mm rings; ATN states a 30 mm tube | 1.4 in (36 mm) |
| ATN ThOR LTV 640 4-12x | 30 mm rings; ATN states a 30 mm tube | 1.4 in (36 mm) |
| ATN X-Sight 4K Pro 3-14x | 30 mm rings; ATN states a 30 mm tube | 1.4 in (36 mm) |
| ATN X-Sight 4K Pro 5-20x | 30 mm rings; ATN states a 30 mm tube | 1.4 in (36 mm) |
| ATN X-Sight 5 3-15x | 30 mm rings; ATN states a 30 mm tube | 1.4 in (36 mm) |
| ATN X-Sight 5 5-25x | 30 mm rings; ATN states a 30 mm tube | 1.4 in (36 mm) |
| ATN X-Sight 5 LRF 3-15x | 30 mm rings; ATN states a 30 mm tube | 1.4 in (36 mm) |
| ATN X-Sight 5 LRF 5-25x | 30 mm rings; ATN states a 30 mm tube | 1.4 in (36 mm) |
| ATN X-Sight LTV 3-9x | 30 mm rings; ATN states a 30 mm tube | 1.4 in (36 mm) |
| ATN X-Sight LTV 5-15x | 30 mm rings; ATN states a 30 mm tube | 1.4 in (36 mm) |
| Pulsar Thermion 2 LRF XG50 | 30 mm rings; Pulsar states a 30 mm tube | 1.4 in (36 mm) |
| Pulsar Thermion 2 LRF XG60 | 30 mm rings; Pulsar states a 30 mm tube | 1.4 in (36 mm) |
| Pulsar Thermion 2 LRF XL50 | 30 mm rings; Pulsar states a 30 mm tube | 1.4 in (36 mm) |
| Pulsar Thermion 2 LRF XL60 | 30 mm rings; Pulsar states a 30 mm tube | 1.4 in (36 mm) |
| Pulsar Thermion 2 LRF XP50 Pro | 30 mm rings; Pulsar states a 30 mm tube | 1.4 in (36 mm) |
| Pulsar Thermion 2 LRF XP60 | 30 mm rings; Pulsar states a 30 mm tube | 1.4 in (36 mm) |
| Pulsar Thermion 2 LRF XQ50 Pro | 30 mm rings; Pulsar states a 30 mm tube | 1.4 in (36 mm) |
| Pulsar Thermion 2 XG50 | 30 mm rings; Pulsar states a 30 mm tube | 1.4 in (36 mm) |
| Pulsar Thermion 2 XP50 | 30 mm rings; Pulsar states a 30 mm tube | 1.4 in (36 mm) |
| Pulsar Thermion 2 XP50 Pro | 30 mm rings; Pulsar states a 30 mm tube | 1.4 in (36 mm) |
| Pulsar Thermion 2 XQ35 Pro | 30 mm rings; Pulsar states a 30 mm tube | 1.4 in (36 mm) |
| Pulsar Thermion 2 XQ38 | 30 mm rings; Pulsar states a 30 mm tube | 1.4 in (36 mm) |
| Pulsar Thermion 2 XQ50 | 30 mm rings; Pulsar states a 30 mm tube | 1.4 in (36 mm) |
| Pulsar Thermion 2 XQ50 Pro | 30 mm rings; Pulsar states a 30 mm tube | 1.4 in (36 mm) |
| RIX Optics Leap L3R | 30 mm rings; RIX Optics states a 30 mm tube | 1.4 in (36 mm) |
| RIX Optics Leap L6R | 30 mm rings; RIX Optics states a 30 mm tube | 1.4 in (36 mm) |
| RIX Optics Leap L12R 1280 | 30 mm rings; RIX Optics states a 30 mm tube | 1.4 in (36 mm) |
| RIX Optics LPR L6R | 30 mm rings; RIX Optics states a 30 mm tube | 1.4 in (36 mm) |
Tube center above the rail is calculated: OneLeaf's published ring-center height above the rail, which is where a round tube in these rings sits. It is not the height of a thermal's lens axis, which no maker publishes.
Specs
| Type | |
|---|---|
| Type 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. | One-piece scope mount |
| 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. | Not statedRail type not stated on OneLeaf's page |
| 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. | Not stated |
| Holds | |
| Holds | 30 mm, 1 in rings"compatible with 30mm tubes"; "Use this cantilever mount for mounting 1-inch telescopic sights" |
| Ring size Ring size The inside diameter of scope rings: 1 in (25.4 mm), 30, 34 or 35 mm. It must equal the scope's tube diameter. Many thermal scopes have a 30 mm tube; others take only their maker's mount. | 30 mm, 1 in (25.4 mm) |
| 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. | 1.4 in (36 mm)"positions the center of the riflescope tube at a height of 1.42 inches (36 mm) from the base". Measured: from the base |
| 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. | 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. | 2 in (50.8 mm)"2-inch offset" |
| 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. | 0.4 lb (0.18 kg)"Weighs 6.2 ounces" |
| 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 | OLSM30150 |
| 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. | $39OneLeaf store (oneleaf.ai) special price; regular $49.00 |
Clamp type not described.
Source: OneLeaf store, OLSM30150 page.
Added October 12, 2026 · Specs last checked October 12, 2026