Vector Optics ViperRay 7.62×39mm Cartridge Red Laser Bore Sight (SCBCR-05) — Fast, ammo-saving pre-zero for AK/SKS & 7.62×39 AR builds

The Vector Optics ViperRay 7.62×39mm Cartridge Red Laser Bore Sight is a caliber-specific, cartridge-shaped collimator that gets your optic on paper in minutes. Precision-machined from brass to mirror the geometry of a real 7.62×39 round, it projects a bright 650 nm red Class IIIA (<5 mW) laser straight down the bore axis so you can align scopes, prisms, or red dots at home or on the bench. Arrive at the range already close to zero, burn fewer rounds, and finish with a precise live-fire zero tailored to your load and distance.

Because it chambers like a live cartridge, the ViperRay seats concentrically for a reliable, repeatable reference point—ideal after mounting new rings, swapping optics between rifles, or verifying zero post-transport. Despite its compact size—38.5 mm (1.5″) long and just 14 g (0.5 oz)—it provides a crisp, visible dot for coarse alignment under typical indoor lighting. Factory centering and simple operation make it a staple tool for any 7.62×39 owner’s range kit.

Key Parameters

• Caliber-specific body: 7.62×39 mm (cartridge-form chamber insert)
• Laser: Class IIIA, <5 mW output; 650 nm red wavelength
• Dimensions & Weight: 38.5 mm length; 14 g net
• Material: Brass housing with durable finish
• Power: 3 × AG3 / LR41 button cells (not included due to shipping regulations)
• Factory alignment: Pre-centered emitter for out-of-box accuracy
• Model / SKU: SCBCR-05 (ViperRay series)

Real-World Use Cases

AK/SKS zeroing with fewer rounds

Rough-in a new optic or rail before you ever step onto the firing line. Chamber the ViperRay, align your reticle to the laser at a fixed indoor distance, and you’ll be on paper immediately with your preferred zero (e.g., 50/100 m) once you start live fire.

7.62×39 AR builds & PCC-style carbines

After swapping uppers, mounts, or muzzle devices, quickly re-index your reticle at home. You’ll spend range time confirming groups instead of searching for the target.

Post-transport & seasonal checks

Travel, temperature swings, and hard training blocks can nudge mounts. A quick chambered laser check verifies your reticle still overlays a known reference point before burning ammo.

Mechanical & Build Highlights

• Cartridge-accurate geometry: Brass case dimensions seat concentrically on the bore axis, aiding repeatability.
• Bright, visible reference: 650 nm dot offers a clean aiming point for coarse alignment under typical indoor lighting.
• Compact & durable: Pocket-size tool stands up to frequent chambering during setup and maintenance cycles.
• Simple workflow: Laser provides a straight-line reference; bullets follow a ballistic arc—finish with live-fire zero.

What’s in the Box

• ViperRay 7.62×39 mm cartridge red laser bore sight (SCBCR-05)
• User instructions
• Batteries not included (requires 3 × AG3/LR41 button cells)

Compatibility & Setup Notes

• Chambering: For 7.62×39 mm chambers only. Do not use in .308 Win/7.62×51, 7.62×54R, or .300 BLK (7.62×35).
• Safety first: Verify the firearm is unloaded, magazine removed, and chamber clear before inserting the bore sight. Keep the muzzle pointed in a safe direction; never look into the beam.
• Initial alignment: Choose a small mark at an indoor distance (5–15 m). Adjust your optic until the reticle overlays the laser dot.
• Finalize at the range: Confirm and fine-tune with live ammo at your chosen distance (e.g., 50/100 m). Different loads and sight heights will shift POI.
• Battery care: Install three AG3/LR41 cells with correct polarity; remove between uses to prevent drain.

Technical Specifications

Summary

The ViperRay 7.62×39 mm (SCBCR-05) is a compact, caliber-exact tool that streamlines every sight-in. Its brass, cartridge-accurate body and factory-centered 650 nm Class IIIA laser put your reticle close to true in minutes—so you can conserve ammunition, confirm at the range, and get back to training or hunting with confidence.