This scope is brand new, never been mounted and fired, just got it back from the factory.  I had a Gen1 and it developed issues, I sent it back to the factory last week on Monday, they received it on Thursday, and I had a new Gen3 delivered to my house the following Monday.  Can't complain about warranty or support. I've enclosed the factory info below:

The Athlon Argos BTR Gen3 10-40x56 is widely celebrated as a premier budget-friendly optic for precision long-range shooting, F-Class, and benchrest disciplines. Priced around $600, it offers unmatched tracking and reticle utility for its class, punching well above its weight.

Key Specifications & Features

• Magnification & Objective: 10-40x magnification with a massive 56mm objective lens for maximum light gathering.
• Reticle: Second Focal Plane (SFP) ABLR4 MOA reticle featuring fine lines and a floating center dot.
• Turrets: 0.125 MOA adjustments with vastly improved, tactile, and audible clicks compared to previous generations.
• Parallax Adjustment: Side focus down to 10 yards to infinity, perfect for close-range precision or extreme long-range.
• Durability: Aircraft-grade aluminum 30mm tube that is waterproof, shockproof, and Argon-purged.

The Pros

• Superb Value: One of the only high-magnification scopes with precise 1/8 MOA adjustments available
• Upgraded Turrets: The Gen3 features upgraded turrets with high-contrast etchings, solid zero-stop, and excellent tactile feedback.
• Excellent Tracking: Delivers spot-on, repeatable tracking for dialing in at long distances.
• Close Focus: Parallax adjusts down to 10 yards, making it highly versatile even for airguns or rimfire precision.

The Cons

• Glass Clarity at Max Magnification: Because it lacks exotic ED/HD glass, image resolution can soften at the absolute highest magnifications or in low-light environments.
• Non-Locking Turrets: Designed specifically for precision bench/F-Class shooting, the turrets are non-locking and not ideally suited for "run-and-gun" tactical shooting or barricade work.
• Weight: Weighs roughly 31.8 ounces, which is fairly standard for a scope this size but something to consider if weight limits are a concern.

Key Specifications

• Magnification: 10–40×
• Objective Lens Diameter: 56 mm
• Tube Diameter: 30 mm (one-piece, aircraft-grade 6061 T6 aluminum, argon purged)
• Eye Relief: 3"
• Field of View @ 100 yd: 12.6 ft (wide) to 3.1 ft (narrow)
• Parallax Adjustment: 10 yd to infinity (side parallax)
• Click Value: 0.125 MOA
• Elevation/Windage Adjustment: 45 MOA total (12 MOA per turret rotation)
• Scope Length: 16.3"
• Weight: 31.8 oz
• Reticle: BLR SFP (Second Focal Plane) ABLR4 MOA — etched glass, fine lines, floating center dot, markings from 0.016 MOA to 2 MOA
• Coatings: Advanced Fully Multi-Coated lenses for brightness and true color; XPL exterior coating for protection against dirt, oil, and scratches
• Durability: Waterproof, fogproof, shockproof

Notable Features

• Precision Zero-Stop System — hard stop on elevation turret for repeatable return to zero
• High-Precision Erector System — consistent tracking for long-range accuracy
• Argon Purged Tube — improves fog resistance and image clarity
• Rugged Construction — ideal for real-world use in varied conditions