Vector Optics One Piece Cosine Indicator, 30 mm

• Integrated cantilever mount: The one-piece design keeps the rings aligned and places the optic forward on a Picatinny rail, helping achieve proper eye relief on modern sporting rifles while simplifying installation.
• Built-in cosine indicator: The integrated level helps monitor rifle cant, which matters when shooting at distance because even slight tilt can shift point of impact.
• 30 mm scope fit: Designed for 30 mm riflescope tubes, this mount suits a wide range of popular optics without the added bulk of oversized ring systems.
• Aluminium construction: The aluminium body keeps weight to 167.00 g, giving a solid mounting platform without adding unnecessary mass to the rifle.
• Extended 138.00 mm length: The longer cantilever format provides more flexibility for scope positioning, which is useful when balancing eye relief, charging-handle clearance and shooting position.

About the - Series

Vector Optics mounting solutions are built for shooters who want a practical, stable interface between rifle and optic without unnecessary complexity. In the brand’s lineup, these mounts and rails support a broad mix of applications, from hunting optics and range rifles to carbines set up for tactical use. The emphasis is typically on straightforward installation, dependable alignment and compatibility with common scope tube sizes and rail standards.

Within this part of the range, the design philosophy centers on keeping the optic secure under recoil while making it easier to achieve a usable shooting position. One-piece layouts are especially relevant for rifles that benefit from forward optic placement, and integrated features such as a bubble level or cosine indicator add a practical advantage for shooters working at longer distances. The result is a mount category aimed less at cosmetic detail and more at repeatable positioning, sensible weight and field-ready handling.

About the Vector Optics One Piece Cosine Indicator, 30 mm

The Vector Optics One Piece Cosine Indicator, 30 mm is a cantilever scope mount intended for rifles that use a 30 mm tube optic and benefit from forward scope placement. That makes it especially suitable for AR-platform rifles and similar setups where eye relief can be difficult to achieve with conventional ring spacing. By combining the rings and base into one structure, the mount reduces alignment variables and gives the scope a more consistent platform.

Its defining feature is the integrated bubble level, referred to here as a cosine indicator. In practical use, this helps the shooter keep the rifle upright rather than canted. That becomes increasingly important as distance grows, because cant can introduce horizontal error even when elevation is correct. Having the level built into the mount keeps that reference visible without adding another accessory to the rifle.

The aluminium construction balances rigidity with manageable weight, and at 167.00 g it adds less mass than many steel alternatives. The 138.00 mm overall length also gives more room to position the scope correctly for head placement, charging-handle access and a stable shooting posture. In use, this is a practical mount for shooters who want a clean one-piece solution with an added leveling aid for more consistent long-range or precision shooting.

About Vector Optics

Vector Optics was founded in 2007 by Xusheng Shen in Shanghai, China. The company began under the name Sunclear before adopting the Vector Optics brand. Its focus is on optics for hunting, competitive shooting, tactical use and general outdoor applications, with a catalog that includes riflescopes, red-dot sights, binoculars, spotting scopes and rangefinders.

Within the shooting optics market, Vector Optics is known for offering a broad range of products across different price levels and use cases. Its lineup includes established riflescope families such as Continental and Tauron, while the company also expanded with the VictOptics sub-brand in 2018. This background is relevant to mounts such as the One Piece Cosine Indicator, as the company develops not only optics themselves but also the supporting hardware needed to install them securely and use them effectively in the field.

Main Features

• Manufacturer: Vector Optics
• Category: One-piece detachable mount
• Scope / Sight type: 30 mm
• Tube diameter: 30
• Bubble level: Yes
• Material: Aluminium
• Color: Black
• Length: 138.00 mm
• Weight: 167.00 g

Warranty

Vector Optics provides a 2-year warranty for this mount. That period suits a mechanical accessory of this type and adds clear long-term support for normal use.