Athlon Optics Argos BTR GEN3 10-40×56 ABLR4 SFP MOA

Benchrest and long-range varmint shooting demand fine adjustments and high magnification that most tactical scopes don't prioritize. The Athlon Argos BTR GEN3 10-40×56 is purpose-built for the bench with 0.125 MOA clicks, 40× top-end magnification, and the ABLR4 precision reticle with 0.016 MOA line thickness — delivering the resolution to split groups at distances where quarter-MOA adjustments are too coarse.

The ABLR4 is a second focal plane reticle with an ultra-fine 0.09 MOA floating center dot and 0.5 MOA hash marks extending 10 MOA in each direction horizontally and 10 MOA below center. The 0.016 MOA line thickness keeps the reticle from obscuring small targets at maximum magnification — critical when shooting groups or spotting bullet holes at 40×. Subtensions are accurate at 40× magnification.

Key Features

• 0.125 MOA (1/8 MOA) click value — half the adjustment increment of standard 1/4 MOA turrets, allowing finer corrections for benchrest-level precision with 12 MOA per revolution
• 30mm one-piece tube with precision zero stop — the zero stop provides a hard return to your confirmed zero after dialing for distance
• 10-40× magnification range — high enough to spot bullet holes at 200+ yards and resolve mirage for wind reading, while 10× low end keeps the scope practical for field use
• Advanced fully multi-coated optics with XPL coating — AFMC lenses deliver high light transmission through the 56mm objective, critical for maintaining image brightness at 40×
• Argon purged — inert gas purging provides superior fog-proofing and internal moisture resistance
• Side focus parallax adjustment — adjustable from 10 yards to infinity, essential for eliminating parallax error at the tight tolerances benchrest shooting demands

Ideal For

Benchrest competitors who need 1/8 MOA adjustments and enough magnification to read conditions and measure groups without walking downrange — the 40× top end and fine reticle lines are built for this discipline.

Long-range varmint and prairie dog shooters who want precise holdovers on small targets at extended distances — the 0.5 MOA hash marks and fine center dot keep the reticle proportional to the target even at maximum magnification.

F-class and long-range target shooters who shoot known-distance courses and need repeatable turret adjustments with a hard zero stop return — the 1/8 MOA clicks provide the resolution to chase X-ring groups at 600-1,000 yards.