Warne MSR Picatinny Side Mount Adapter, 45 Degree

• 45° offset mounting angle: positions a secondary optic or accessory to the side of the rifle, allowing faster transitions than removing the primary sight picture or reconfiguring the main setup.
• Compact Picatinny rail section: adds mounting space for a red dot sight, flashlight, rangefinder or night vision accessory without taking up the top rail area needed for the primary optic.
• Aluminium construction: keeps the adapter light at 75.00 g, so it adds useful capability without making an MSR or hunting rifle feel front-heavy.
• MSR-focused design: built for rifles with Picatinny rails and especially well suited to AR-style platforms where offset accessories improve handling in close, fast or mixed-distance shooting.
• Made in USA: reflects Warne’s emphasis on domestic manufacturing for shooters who want a mount accessory built around consistent fit and practical field durability.

About the MSR Series

Warne’s MSR series is built around the needs of modern sporting rifles, where optics and accessories often have to share limited rail space while still preserving a practical shooting position. In Warne’s lineup, the MSR family focuses on mounts and adapters for AR-pattern rifles and similar platforms, combining straightforward installation with dimensions and layouts that suit contemporary sporting, defensive and competition use.

Rather than treating the rifle as a simple host for one optic, the series is designed around complete sighting setups. That includes primary scope mounts, extended cantilever solutions and accessory interfaces that help shooters add offset sights or support equipment without compromising access to the main optic. The design philosophy is functional and compact: keep weight under control, maintain secure attachment to Picatinny rails and make each part useful in real rifle configurations rather than only on paper. For shooters building a flexible tactical optics setup, the MSR range is aimed at practical compatibility, repeatable positioning and efficient use of rail space.

About the Warne MSR Picatinny Side Mount Adapter, 45 Degree

The Warne MSR Picatinny Side Mount Adapter, 45 Degree is a compact offset mount accessory made for shooters who want to add a secondary sighting system or support device without crowding the rifle’s main rail. Its 45° offset Picatinny rail places the accessory at an angle that can be brought into use with a simple rifle rotation, which is especially useful when a magnified primary optic is paired with a close-range red dot sight. That same layout also suits compact lights, rangefinding accessories and selected night vision or thermal support devices where side placement is more practical than a top-mounted position.

The adapter’s value is not just that it adds rail space, but that it adds it in a more usable location. On rifles already carrying a scope, clip-on device or other top-rail equipment, an offset mount helps preserve the main sight line while still expanding capability. The aluminium body keeps weight low at 75.00 g, so the rifle remains lively in the hands and easier to manage during movement, transitions and improvised shooting positions. Because it is intended for AR uppers and Picatinny rails, it fits naturally into MSR builds where modularity matters. In practice, this adapter is best suited to shooters who want a cleaner way to integrate a backup optic or accessory while keeping the rifle fast, compact and easy to operate.

About Warne

Warne Manufacturing Company was founded in February 1991 in Clackamas, Oregon. Now based in Tualatin, Oregon, United States, the company focuses on mounting systems for the shooting sports industry. Its product range covers scope rings, one-piece mounts and accessory interfaces designed for sporting, hunting and tactical rifle setups.

Warne is particularly known for mount families such as Maxima, Mountain Tech and Skyline, each aimed at different rifle and optic applications. Across these lines, the company emphasizes practical fit, secure attachment and compatibility with modern rail standards. That specialization makes Warne a relevant manufacturer for shooters who want purpose-built mounting hardware rather than general accessories.

Main Features

• Manufacturer: Warne
• Product type: 45 degree Picatinny side mount adapter
• Material: Aluminium
• Weight: 75.00 g
• Made in: USA
• Accessories for: Flashlights, Night Vision, Rangefinders, Red Dot Sights, Rifles, Riflescopes, Thermal Binoculars, Thermal Clip-on, Thermal Monoculars

Warranty

Warne provides a 10-year warranty for this mount accessory, giving long-term support for a component that is intended for regular use on working rifle setups.