Every scope a brand makes, at a glance.
See what sets a brand's scopes apart, what you get as the price climbs, and which one is right for your hunt.
SIG SAUER Electro-Optics
The BDX app ecosystem at strong direct prices, on an undisclosed China-built sensor. Electronics coverage runs 5 years, original owner only.
ECHO
ECHO thermal line
Sig — all 5 scopes, line by line
What Sig builds on
Every sensor Sig builds on also ships inside ATN scopes — same sensor, different name and price.
5 names, 3 pictures, 1 packages
Every Sig is a picture wearing a package. The picture comes from the sensor and the lens. The package is the line — the screen, the body, the rangefinder — and the price. The model name tells you the package, not the picture.
One system, sold by the lens. Every Sig here is the same system behind a different lens: 50 mm reads 2.5×, 35 mm reads 2× on the same 640×512 sensor. The magnification is the lens — you're choosing how far you can identify, not a model tier.
Which dollar buys picture, which buys packaging
Two kinds of price step hide in a lineup. Build steps buy detail at distance: a bigger sensor, a longer lens. Package steps buy polish, not detail: a sharper screen, a rangefinder, a different body. Worth knowing which one a price jump is before you pay it.
Each step is priced from Sig's own lineup by holding everything else identical — the median across every matched pair on our board. Refreshed with every catalog update.
What Sig's own price list says
Computed straight from the specs and prices on the board — where the same picture sells twice, and what a feature really costs. Refreshed with every catalog update.
Who you're actually buying from
SIG never names who makes the ECHO line's sensor; its own FCC filings show the current generation is China-built. The quoted ≤20mK sensitivity is a software-tuned system figure — the native number runs near 50mK per our reference. We score on native, so the marketed figure can't inflate a SIG score.
Strengths
- The BDX ballistics ecosystem — app-connected rangefinding, ballistic data exchange, streaming and recording — a package most thermal brands don't offer.
- Strong direct pricing at the entry: a 384 scope at $2,099 and a 640 at $2,999 undercut the US-built brands hard.
- A live, growing line — a new riflescope generation (ECHO R) launched in 2026.
Cautions
- The Infinite Guarantee excludes electronic components: ECHO thermal actually carries a 5-year, original-owner, non-transferable electronics warranty — and the site's own warranty tab doesn't surface the carve-out.
- ≤20mK is a system figure; the sensor's native number runs near 50mK.
- The sensor maker is undisclosed, and much of the line is reflex-sight format rather than a long-range scope.
What each upgrade costs in the Sig lineup
Every clean single-feature step inside Sig's own catalog — a bigger sensor, a longer lens, a rangefinder. Each dot is a pair where only that one thing changed.
Lines run from the flagship at the top down to the entry models, and within each line the priciest sits first. Prices are current street prices.
Who sells Sig
9 stores list Sig scopes today, and their prices differ — on a typical Sig scope the cheapest store is about $500 below the most expensive. Each scope’s own page lists its stores with the current price, shipping, and return terms. EuroOptic and Scopelist share one owner, so they count as one store.