GBRS Group® LERNA Mount / Aimpoint® ACRO

The GBRS Group LERNA is a high-rise mount designed for Aimpoint ACRO red dot sights. It positions the optic's axis 2.91" / approximately 73.9 mm above the mounting rail, supporting a more upright head position when aiming. The elevated design can make the optic easier to use with a ballistic helmet, communications headset, protective mask, or night vision device. The LERNA follows the same elevated-optic concept as the GBRS HYDRA but omits the front accessory platform.

2.91" Optical Axis Height

The LERNA positions the Aimpoint ACRO's optical axis 2.91" / approximately 73.9 mm above the top surface of the mounting rail. This reduces the need to lower the head toward the stock and supports a more natural heads-up aiming position.

More Clearance for Head-Mounted Equipment

The elevated optic position is particularly useful when wearing equipment around the head and face. It can make aiming easier when using a ballistic helmet, communications headset, protective mask, or night vision device.

Designed for Aimpoint ACRO Optics

This LERNA version features a mounting interface specifically designed for Aimpoint ACRO red dot sights. GBRS offers the same high-rise concept for other red dot and holographic sight interfaces, but each version uses a dedicated mounting footprint.

HYDRA-Based Design without a Front Platform

The LERNA is based on the elevated-optic concept of the GBRS HYDRA system but omits the front platform for laser aiming modules and other accessories. Its streamlined construction is focused exclusively on mounting the primary optic.

6061-T6 Aluminum Construction

The mount is machined from 6061-T6 aluminum alloy and protected by a Type III Class 2 hard-anodized finish for increased surface hardness and wear resistance.

Made in the USA

The mount is designed, manufactured, and assembled in the United States.

Key Features:

• Designed for Aimpoint ACRO red dot sights
• Optical axis height of 2.91" / approximately 73.9 mm
• Supports a natural heads-up aiming position
• Provides additional clearance when using helmets and communications headsets
• Suitable for use with protective masks and night vision devices
• Based on the GBRS HYDRA mounting concept
• Streamlined design without a front accessory platform
• 6061-T6 aluminum construction
• Type III Class 2 hard-anodized finish
• Made in the USA