Contessa Picatinny Rail for Browning X-Bolt Long, extended for NV

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 X-Bolt LA

The Browning X-Bolt LA (Long Action) rifle, first introduced in 2007, is designed with a B distance of 93.8 mm, forming an X pattern with its mounting screws—a feature termed the X-Lock Mounting System. It employs a push-feed action with three front-locking lugs and boasts a proprietary detachable rotary magazine. The mounting system consists of eight holes on the receiver for scopes—four at the front and four at the rear. The rifle is available in various long-action calibers suited for different hunting needs​​.

Variants

Browning X-Bolt is available in the following variants: RMEF Special Hunter, RMEF White Gold, Composite 3D Birds Eye Maple Blued / Stainless, Composite Stalker, Eclipse Hunter, Stalker Typhon Suppressor Ready, High Grade Hunter Full Line Dealer, Hunter, Hunter Full Line Dealer, Hunter Left-Hand, Long Range Hunter Carbon Fiber, Long Range Hunter Realtree Max-1, Medallion, Medallion Maple, Medallion Left-Hand, Micro Buckthom Pink, Micro Hunter, Micro Hunter Left-Hand, Micro Midas, Mossy Oak Brush, SSA Predator Hunter Mossy Oak Brush, SSA Predator Hunter Realtree Max-1, Stainless Stalker, Stainless Stalker Carbon Fiber Fluted, Stainless Stalker Open Sights, Varmint Stalker, White Gold.

Calibres

Browning X-Bolt LA is chambered for the following b:

• .264 Win. Mag
• .270 Win.
• .280 Rem.
• .280 Ackley Improved
• 7mm Rem. Mag.
• .30-06 Spr.
• .300 Win. Mag.
• .300 RUM
• .338 Win. Mag.
• .375 H&H Mag.

Design of the Rail

The Contessa Picatinny Rail for Browning X-Bolt Long, extended for NV 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 rail extends back towards the shooter because night vision devices need less eye relief and must be positioned further back on the firearm. The picatinny rail features 20 slots and 8 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 eight screws.

Mounting Dimensions

• A=17.8mm
• B=93.8mm
• C=17.8mm
• BHU=1.9mm
• R1=50.80mm
• R2=18.5mm

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 eight screws to securely attach the rail to your firearm.

Warranty

This product comes with a 30-year warranty.