Contessa Picatinny Rail for CZ 527

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 BRNO

Brno, officially known as Zbrojovka Brno, is a Czech firearm manufacturer with a rich history dating back to between World Wars when it collaborated with the Royal Small Arms Factory in Enfield, England. It produced military and sporting weapons renowned for their reliability. Nationalized post-WWII, it was privatized in 1990 and acquired by Česká zbrojovka in 2008. Today, Brno is known for its high-quality hunting and competition firearms, including pistols and rifles​​.

About the CZ 527

The Brno CZ 527 is a smallbore centerfire bolt-action rifle designed with a "mini-Mauser" action system, which is well-suited for shorter and less powerful calibers. It features a controlled-feed bolt with two locking lugs that secure into the steel receiver. This rifle is noted for its hammer-forged barrel, enhancing durability and accuracy, and offers a choice between single or double set-triggers. The safety catch is located on the right side behind the bolt lever and includes a red dot indicator when the rifle is cocked and ready to fire. The CZ 527 also includes a detachable box magazine with a capacity of five cartridges. The rifle features a 16.5 mm flat-top dovetail, and equipped with a recoil notch​​.

Variants

CZ 527 comes in the following variants:

• Carbine
• Carbine Synthetic
• Youth Carbine
• Lux
• Lux LH
• Night Sky
• American
• Varmint
• Varmint Laminated
• Varmint MTR
• Exclusive Ebony Edition
• Thumbhole
• Suppressor Ready
• FS
• Sporter

Calibres

CZ 527 is chambered for the following calibers:

• .17 Hornet
• .17 Rem.
• .204 Ruger
• .22 Hornet
• .221 Rem. Fireball
• .222 Rem.
• .223 Rem.
• 6.5mm Grendel
• 7.62x39
• .300 AAC Blackout

Design of the Rail

The Contessa Picatinny Rail for CZ 527 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. 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 16.5mm Dovetail with CZ 527 recoil notch.

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 CZ 527 can be mounted on the following rifles, which share the same mounting standard:

• BRNO CZ 527
• 16.5 mm CZ/Brno

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 and a sturdy wrench for easy installation.

Warranty

This product comes with a 30-year warranty.