Scope · Discovery
Discovery LHT 3-12×42 SFIR Ultralight FFP Rifle Scope
Ultralight first-focal-plane scope with a wide field of view. The premium pick for the backpacking PCP hunter who refuses to give up FFP accuracy.
Image credit: Airgun Archery Fun
Quick take
The LHT 3-12×42 is what Discovery built when their engineers were told to shave every gram from the HD line without losing first focal plane. The "LHT" designation across Discovery's catalog means Lightweight Hunting — same 3-12× magnification, same 42mm-class objective, but engineered for hunters who walk to the shot rather than shoot from a bench. Wide field of view is the second LHT signature: you find the target faster on full magnification, which matters when you've got 4 seconds before a squirrel breaks cover.
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Specifications
Key specs
| Model series | Discovery LHT (Lightweight Hunting) |
| Magnification | 3× to 12× variable |
| Objective lens | 42mm |
| Tube diameter | 30mm |
| Reticle position | First focal plane (FFP) |
| Illuminated reticle | Yes |
| Side focus parallax | Yes |
| Field of view | Large FOV (LHT design priority) |
| Use case | Backpacking, spot-and-stalk PCP, walked-up pest control |
| Build priority | Weight reduction vs. HD-series equivalents |
| Ring options | High 11mm · Low 11mm · High 20mm · Low 20mm (selected at checkout) |
The Hunt & Live take
Why this scope earns the pick
The LHT lineup is Discovery’s answer to “how do I keep FFP without carrying 600 grams of glass on a 6-hour stalk?” Where the HD 3-12×44 weighs 575g, the LHT shaves enough through aluminum housing and a smaller objective bell to materially affect what your rifle weighs at the end of the day. For a stand-hunting PCP or a backyard pest setup, that doesn’t matter. For a PCP you carry on foot in the woods, every 100 grams off the scope is 100 grams you don’t notice by hour three.
The large field of view is the second LHT signature. Wide FOV at high magnification means you find the target faster — critical when you’re snap-shooting a squirrel that’s only going to give you a 4-second look before it goes around the tree. The FFP reticle gives you accurate holdover at any zoom, which is the right setup for shots that come without time to dial.
What it pairs with
This is the right scope for a Snowpeak Lynx Gen 3 walked-up build — the rifle is already lighter than most PCPs, and the LHT respects that by not putting a 600g scope on top of a 2.3kg gun. The 30mm tube means 30mm rings only. Low 20mm Picatinny is the right pick for the Lynx Gen 3 with the 42mm objective clearing a stock cheek weld.
Ring choice at checkout
- Modern Picatinny PCP (Lynx Gen 3, modern Avenger) → Low 20mm
- Modern Picatinny PCP with tall sight obstruction → High 20mm
- Older 11mm dovetail PCP → Low 11mm or High 11mm depending on objective clearance
Honest trade-offs
The 42mm objective is smaller than the 44mm HD — meaningful in the last 30 minutes of dawn/dusk light. If you’re hunting first/last light primarily, the HD 3-12×44 above gathers slightly more light. The LHT designation also means fewer adjustment clicks total than the heavier-built tactical scopes — typically 100 MOA range rather than 120+ MOA. For a PCP, that’s never a problem.
The price tier reflects the engineering — this is the premium pick in the 3-12× class, not the budget option. If weight isn’t on your priority list, the HD 3-12×44 will do everything this scope does for less. But if you’re carrying the rifle for hours, the LHT pays you back every step.
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Every part. Every line item. Picked, budgeted, and linked. Snowpeak Lynx Gen 3 rifle with bundled scope, hand pump, pellets, mounts, silicone oil, fill adapter, bipod, and case — $1,200–$1,500 CAD total, every item from our Canadian partner.
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