Contessa Picatinny Rail for Winchester 70 Long

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 Winchester

Founded in 1866 by Oliver Winchester, Winchester Repeating Arms Company has been pivotal in the development of firearm technology, particularly with the introduction of the lever-action rifle. The company's legacy started with the Model 1866, known as the "Yellow Boy." Over the decades, Winchester expanded its reputation with models like the 1892 and the Model 70, often referred to as "The Rifleman’s rifle." Owned by the Olin Corporation today, Winchester continues to influence the firearms industry with a diverse range of products from rifles to ammunition​​.

About the M70 LA

The Winchester Model 70 LA (Standard) is a bolt-action rifle that has been a staple in the Winchester lineup since its introduction in 1936. It's celebrated for its controlled-feed action, strong steel receiver, and three-position safety that enables firing, locking, and allowing bolt movement while the chamber is unloaded. It features four holes for scope mounting. The Winchester Model 70 LA (Standard) continues to uphold its reputation as "The Rifleman’s rifle," noted for its robust construction and reliable performance​​.

Variants

Winchester Model 70 LA is available in the following variants: Super Grade, Featherweight, Featherweight Compact, Alaskan, Safari Express, Extreme Hunter – Strata MB, Long Range MB, Maple, Super Grade French Walnut, Extreme – True Timber VSX MB, Extreme Weather MB, Extreme Weather SS, Ultimate Shadow Hunter, Ultimate Shadow, Ultimate Shadow Hunter SS, Ultimate Shadow SS, Ultimate Shadow Hunter – Mossy Oak Break-Up Infinity, Ultimate Shadow Hunter SS – Mossy Oak Break-Up Infinity, 75th Anniversary Super Grade, Alaskan Stainless Laminate, Brown Laminated Coyote Blued, Brown Laminated Coyote Stainless, Classic Camo Ultimate Shadow Blued, 150TH Commemorative, Laminated WSM, Classic Stainless, Classic Super Grade III, Classic Ultimate Shadow Blued, Classic Ultimate Shadow Stainless, Coyote Varmint Stainless Suppressor Ready, Coyote Varmint Suppressor Ready, Featherweight Grade III, Jack O’Conner Custom Tribute, Jack O’Conner Tribute, Stainless Featherweight, Stealth, Super Grade Special Limited Edition, Black Shadow, Coyote Light Blued, Coyote Light Stainless, Featherweight Left-Hand, Featherweight Deluxe, Featherweight Stainless, Laminated Coyote OutbackTM Stainless, Coyote Brown Stainless, Laminated Coyote Gray Stainless, Pro Shadow Blued, Pro Shadow Stainless, Shadow Elite Camo Stainless, Shadow Elite Stainless, Sporter Deluxe, Sporter III, Sporter III Left-Hand, Stealth II, Super Grade Centennial 30-06, Super Grade III RMEF, Super Shadow Blued, Compact, Sporter RMEF, Coyote Light, Featherweight High Grade Maple, Coyote Light Suppressor Ready, Featherweight Stainless, Featherweight Stainless Dark Maple, Super Grade Stainless, Sporter.

Calibres

Winchester Model 70 LA is chambered for the following calibers:

• .25-06 Rem.
• 6.5x55 SE
• .264 Win. Mag.
• 6.8 Western
• .270 Win.
• 7mm-08 Rem.
• 7mm WSM
• 7mm Rem. Mag
• .30-06 Spr.
• .300 Win. Mag.
• .338 Win. Mag.
• .375 H&H Mag.
• .416 Rem. Mag.

Design of the Rail

The Contessa Picatinny Rail for Winchester 70 Long 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 14 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=21.9mm
• B=96.5mm
• C=21.9mm
• BHU=3.4mm
• R1=34mm
• R2=17mm

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 Winchester 70 Long can be mounted on the following rifles, which share the same mounting standard:

• Kimber 89 BGR (Round Top)
• Marlin XL-7

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.