Contessa Picatinny Rail for Browning Acera (20 MOA)

About Picatinny Rail

The Picatinny rail system features slots spaced at precise 5.23 mm intervals, enabling consistent and versatile use along its entire length. This system is designed for ease of mounting and is universally compatible; accessories designed for a Picatinny rail will fit seamlessly, irrespective of the manufacturer or the date of production. Known for its affordability, durability, and reliability, the Picatinny rail is a popular choice among professionals and military personnel, making it a dominant player in the scope mounts market in recent years.
The Picatinny design marks a significant advancement over the older Weaver standard. Unlike the Weaver system, which offers only a few predetermined slots, the Picatinny rail boasts continuous slots across its surface. This feature provides the flexibility to mount devices at any preferred location. Additionally, the slots on a Weaver rail are narrower, at 3.8 mm, allowing mounts designed for Weaver rails to fit on a Picatinny rail. However, mounts specifically made for Picatinny rails do not fit on Weaver rails due to the size difference of recoil stoppers. This compatibility and versatility make the Picatinny rail a superior mounting solution in various applications.

About the Contessa

Contessa, an Italian manufacturer renowned for its high-quality scope mounts, combines decades of experience with advanced 3D technology and precision handcrafting. Recognized internationally, its mounts are not only functional but also aesthetically pleasing, featuring soft, rounded edges. Contessa Picatinny rails are machined to strict tolerances, and  feature one of the best fit and finish. Each rail bears the distinctive golden Contessa logo, symbolizing quality and craftsmanship.

About the FN Browning

Browning Arms Company was founded in 1880 by the prolific inventor John Moses Browning in Ogden, Utah. The company's innovative designs were produced by major manufacturers including Winchester, Colt, and Fabrique Nationale of Belgium. Known for a variety of firearms like the Colt Peacemaker and Browning automatic rifles, Browning also diversified into non-firearm products such as knives and clothing. In 1977, it was purchased by the Belgian firm Fabrique Nationale and remains influential in the firearms industry​​.

About the ACERA

The Browning Acera is a straight-pull centerfire hunting rifle introduced in 1999 as a repeatable version of the BAR. It features a manually operated bolt with seven locking lugs and no gas system or return spring. The receiver is made of aluminum alloy and is drilled and tapped with four mounting holes for optics. The bolt handle is positioned forward compared to most straight-pull rifles. It has a drop-down, removable magazine and a push-button safety behind the trigger. The Acera was discontinued in 2001.

Variants

Browning ACERA is available in the following variants:

• Stutzen
• Pirsch

Calibres

Browning ACERA is chambered for the following calibers:

• .270 Win.
• 7x64
• 7mm Rem. Mag.
• .308 Win.
• .30-06 Spr.
• .300 Win. Mag.
• 9.3x62

Inclination

20 MOA inclination is only needed when the scope runs out of elevation. For example, when shooting at the range of 100 m, shooter gains 58.2 cm / 100 m of additional elevation range with a 20 MOA mount. This is approximately 5.8 Mrad of elevation. To make things even clearer – if the target was placed at 100 m, the scope with 20 MOA inclined rail would aim to the center of the target while the rifle’s barrel would aim 58 cm higher than the scope. This gives the shooter extra elevation needed for long range shooting. If you plan to shoot on distances longer than 600 meters, 20 MOA is most common. There is no negative effect of the inclined Picatinny rail in the mounting setup if you only shoot on shorter distances. The same goes also the other way around, since if you don’t shoot on extreme distances then Picatinny rail with inclination is not needed.

Design of the Rail

The Contessa Picatinny Rail for Browning Acera (20 MOA) is constructed from steel, known for its superior hardness and durability compared to aluminum, ensures a higher degree of repeatability with less wear over time. The picatinny rail features 12 slots and 4 mounting holes, all secured with 6-48 threading. A distinct central canal on the rail allows for the concurrent use of the rifle's iron sights, offering a reliable backup sighting solution without the need to remove the picatinny rail when there is nothing mounted on it. This picatinny rail is attached to the rifle with four screws.

Mounting Dimensions

• A=12.7mm
• B=81.0mm
• C=12.7mm
• BHU=0mm
• R1=18mm
• R2=18mm

This rail can also be mounted on:

Usually, a Picatinny rail can be mounted on multiple different rifles if they share the same mounting surface, which we commonly refer to as the mounting standard. The Contessa Picatinny Rail for Browning Acera (20 MOA) can be mounted on the following rifles, which share the same mounting standard:

• FN Browning BPR
• FN Browning BAR
• Benelli ARGO
• Benelli R1
• Fabarm Iris
• FN Browning BAR MK2
• FN Browning BAR MK3
• FN Browning Maral
• FN Browning BLR LA
• FN Browning BLR Lightning LA
• Winchester SXR Vulcan

Mounting Instructions

Remove all the stains (grease, oil etc.) from the rifle's receiver with a cleaning fluid (acetone). Once the surface is clean and dry, check whether the screws match the rail and the holes on the receiver. Before mounting the rail permanently, apply a minimal amount of thread-locking fluid 278 or 648 on screws. Be careful not to get the fluid in or near the mounting holes. Carefully clean the remaining excess fluid around the rail with a cleaning fluid. Using a torque driver, screw the screws appropriately (up to 3 Nm/26.5 in-lbs).
If you require any mounting tools, you can find them on our Rifle Scope Mounting Tools page.

What's in the box?

Each package comes complete with one steel rail, a sturdy wrench for easy installation, and four screws to securely attach the rail to your firearm.

Warranty

This product comes with a 30-year warranty.