Optik Arms Picatinny rail - CZ 557 LA

About Picatinny Rail

The Picatinny rail system is meticulously designed with slots spaced at exact intervals of 5.23 mm, ensuring both consistent and versatile use throughout its length. This precision allows for straightforward mounting and guarantees universal compatibility, ensuring that scopr mounts tailored for a Picatinny rail will seamlessly fit, irrespective of the manufacturer or date of production. Favored for its cost-effectiveness, robustness, and dependability, the Picatinny rail is increasingly popular among experts and military users, becoming the top choice in the scope mounts market in recent years.

The Picatinny framework marks a notable enhancement over the traditional Weaver standard. Unlike the Weaver system, which has only a limited number of slots, the Picatinny rail boasts continuous slots across its entirety, providing enhanced flexibility for positioning devices at any desired point. Additionally, the slots on a Weaver rail are slimmer, measuring 3.8 mm, which permits scope mounts made for Weaver rails to be used on a Picatinny rail. However, due to differences in the width of the recoil stoppers, scope mounts specifically designed for the Picatinny rail cannot be accommodated on Weaver rails. This level of compatibility and adaptability makes the Picatinny rail a superior option for a variety of mounting needs.

About the Optik Arms

Optik Arms is a manufacturer renowned for its high-quality optical mounting solutions and firearms accessories, based in Bosnia and Herzegovina. The company specializes in producing durable and reliable products such as fixed mounts, detachable mounts, and Picatinny rails. Optik Arms implements rigorous quality controls and utilizes advanced technology to ensure the longevity and performance of their products. Each component undergoes thorough anti-wear and anti-corrosion treatments, which highlight their commitment to quality and customer satisfaction. The company's products are designed to meet the precise needs of both recreational shooters and professional marksmen, offering a variety of mounting options to accommodate different scopes and sighting systems.

About the CZ

CZ, also known as Česká zbrojovka, is based in Uhersky Brod, Czech Republic, and was established in 1936. Originally a subsidiary of CZ Strakonice, it was part of the rapidly growing Czech arms industry. After World War II, it was nationalized and produced diverse items under Soviet control. In 1992, it regained independence, expanding globally, including opening a U.S. facility in 2019.

About the CZ 557 LA

The CZ 557 LA is a long-action bolt-action rifle introduced in 2012 as an upgrade to the CZ 550 model. It features a cylindrical push-feed bolt with two locking lugs, a short extractor, and a plunger ejector. The rifle is equipped with a cold hammer-forged barrel that is factory-lapped for greater accuracy. It includes a fully adjustable trigger mechanism and an internal box magazine with a hinged floorplate. For mounting, the CZ 557 LA comes with a 19 mm dovetail rail milled on the front and rear of the receiver, with a recoil notch located under the rear mounting surface to the left.

Variants

CZ 557 LA is available in the following variants:

• Lux
• Lux II.
• Lux LH
• Eclipse
• American LH
• Predator
• Sunset Valley
• Green Valley
• Grey Valley
• Night Sky
• Synthetic
• Synthetic S
• Eclipse
• FS

Calibres

CZ 557 LA is chambered for the following calibers:

• 6,5×55 SE
• 7×64
• .30-06 Spr.
• 8×57 JS

Design of the Rail

The Optik Arms Picatinny rail - CZ 557 LA, is precision-engineered from steel, offering superior durability and wear resistance compared to aluminum alternatives. This high-strength construction ensures exceptional repeatability, even with frequent use.

The picatinny rail features 13 slots. A unique central channel enhances functionality by allowing simultaneous use of the rifle's iron sights, serving as a reliable backup when no accessories are mounted.

This picatinny rail is attached to the rifle with 19mm Flat Top Dovetail

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 Optik Arms Picatinny rail - CZ 557 LA can be mounted on the following rifles, which share the same mounting standard:

• BRNO ZKK 600, CZ 550
• BRNO ZKK 601
• BRNO 721
• BRNO 722
• BRNO ZG 47
• BRNO CZ 537
• Brünner 19
• CZ 537
• CZ 550 Standard
• 19 mm Dovetail

Mounting Instructions

Clean the rifle's receiver thoroughly with a cleaning fluid, such as acetone, to remove all stains, grease, and oil. Once the surface is clean and dry, verify that the screws fit both the rail and the receiver holes. Before mounting the rail, apply a minimal amount of thread-locking fluid (278 or 648) to the screws, avoiding any contact with the mounting holes. Carefully clean any excess fluid around the rail using the cleaning fluid. Using a torque driver, tighten the screws to the appropriate torque (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.

Warranty

This product comes with a 10-year warranty.