The Sig Sauer SIERRA3BDX 3.5-10×42 (MPN SOSBDX33111) pairs a digital BDX-R1 reticle with LevelPlex anti-cant and KinETHIC indicators. Ranged with a compatible KILO-BDX rangefinder, it displays an automatic illuminated holdover dot, so the process is simply range, hold, and fire.

Key Specifications

• 3.5-10x magnification. A versatile hunting zoom range.
• 42mm objective lens. Solid light gathering for low-light hunting hours.
• BDX-R1 digital ballistic reticle. Displays an automatic illuminated holdover dot once ranged.
• BDX rangefinder pairing. Connects with a compatible KILO-BDX rangefinder for ballistic-corrected holds.
• LevelPlex digital anti-cant. Helps keep the rifle level for consistent long-range accuracy.
• KinETHIC kinetic energy indicator. A built-in digital display feature of the BDX-R1 reticle.
• 4.20 inches of eye relief. A consistent eye box for quick target acquisition.
• 0.25 MOA per click. Precise adjustment resolution.
• 12.8 inches overall. A compact footprint for a digital riflescope.
• Range, hold, fire workflow. No manual holdover dialing needed once ranged.

Frequently Asked Questions

What does LevelPlex do on this scope?

LevelPlex is a built-in digital anti-cant indicator that helps you keep the rifle level for consistent long-range accuracy.

Does this scope work without a KILO-BDX rangefinder?

It still functions as a standard 3.5-10×42 illuminated riflescope; the automatic BDX holdover dot requires pairing with a compatible KILO rangefinder.

What is KinETHIC on the SIERRA3BDX?

It’s Sig’s kinetic energy transfer indicator, one of the digital features built into the BDX-R1 reticle display.

Buy the Sig Sauer Sierra3BDX 3.5-10×42 Riflescope

Simplify long-range holdovers with the Sig Sauer SIERRA3BDX 3.5-10×42. Shop the full Sig Sauer lineup or browse more Gun Scopes in our Gun Scopes category at Schaefer Defense.