Optic AccessoriesBadger OrdnanceSold by Brownells

Badger Ordnance

Angle Cosine Indicator Mount Gen I - Angle Cosine Indicator W/Gen I Rail Mount

Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.

Machined Aluminum

Mount for the Sniper Tool

Directly Attaches

To MIL STD 1913 rails

Uses Two

Soft-point set screws to help

Also Fits

M16 and AR-15 flat-top rifles

Mil-spec Anodized

Hard coat Type III finish

$329.99
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SKU: 093000093

Overview

This machined aluminum mount is designed to secure the Sniper Tool Designs Angle Co-Sine Indicator directly to a MIL STD 1913 rail, keeping the unit positioned below the rail for a streamlined setup. It attaches with two soft-point set screws intended to avoid marring the mount, and it also fits M16/AR-15 flat top rifles. Finished in Mil Spec Anodized Hard Coat Type III black, it is a practical accessory for shooters who want the ACI integrated into their rifle system rather than carried separately. Badger Ordnance offers it as a dedicated mounting solution for use with compatible rail-equipped firearms.

Why Hunters Choose the Badger Ordnance

Directly Mounts

Sniper Tool Designs Angle Co-Sine

Soft-point Set

Screws help prevent marring the

Also Fits

M16 and AR-15 flat top

Machined Aluminum

Construction provides a solid mounting

Mil-spec Anodized

Hard coat Type III finish

Key Features

  • Machined aluminum mount for the Sniper Tool Designs Angle Co-Sine Indicator (ACI).
  • Directly attaches to MIL STD 1913 rails.
  • Uses two soft-point set screws to help avoid marring the mount.
  • Also fits M16 and AR-15 flat-top rifles.
  • Mil-spec anodized hard coat Type III finish in black.
  • Mounts the ACI below the rail.

Best Used For

  • Hunters mounting a Sniper Tool Designs ACI directly to a MIL STD 1913 rail
  • M16 or AR-15 flat top rifle users needing a below-rail ACI mount
  • Shooters wanting a machined aluminum mount with soft point set screws
  • Users who want to avoid marring their mount during ACI installation

Specifications

Aci CompatibilitySniper Tool Designs Angle Co-Sine Indicator (ACI)
Attachment Method2 soft point set screws
Blade FinishMil Spec Anodized Hard Coat Type III, Black
Country Of OriginBadger Ordnance
FitsM16/AR-15 flat top rifles
MaterialMachined Aluminum
Mount CompatibilityMIL STD 1913 mount
Mount Positionbelow rail
Product TypeAngle Cosine Indicator mount

Pros

  • Directly mounts the Sniper Tool Designs Angle Co-Sine Indicator to a MIL STD 1913 rail
  • Soft-point set screws help prevent marring the mount during installation
  • Also fits M16 and AR-15 flat top rifles
  • Machined aluminum construction provides a solid mounting platform
  • Mil-spec anodized hard coat Type III finish in black
  • Mounts the ACI below the rail for a low-profile setup

Considerations & Trade-offs

  • Designed specifically for mounting the Sniper Tool Designs Angle Co-Sine Indicator, so it is a purpose-built accessory rather than a general-purpose rail component.
  • Attaches with two soft-point set screws, which helps avoid marring the mount but also means installation is dependent on that clamping setup.
  • Mounts the ACI below the rail, so placement is more integrated and may not suit users looking for a higher or more exposed position.
  • Compatibility is tied to MIL STD 1913 mounts and M16/AR-15 flat top rifles, so it is not a universal fit across all platforms.

Suggested Comparisons

  • Rifle accessory mounts
  • Angle cosine indicators
  • MIL-STD-1913 rail accessories
  • AR-15 flat-top rifle accessories

Suggested Accessories

  • MIL STD 1913 rail accessories
  • AR-15 flat top rifle accessories
  • Mounting hardware
  • Optics mounting accessories

Frequently Asked Questions

What is this mount designed to do?

It is designed to mount the Sniper Tool Designs Angle Co-Sine Indicator (ACI) directly to a MIL STD 1913 mount.

Will it fit an AR-style flat top rifle?

Yes. The product data says it also fits M16/AR-15 flat top rifles.

How does it attach to the rail?

It attaches with 2 soft point set screws, which the description says are intended not to mar the mount.

Does the ACI sit above or below the rail?

The product description states that it mounts the ACI below the rail.

What finish is listed for this mount?

The listed finish is Mil Spec Anodized Hard Coat Type III, Black.