CZ 457 MTR Scope Rail: Pairing the Match Pro ED in an ARC M-Brace

When evaluating a scope rail for a precision rimfire build, the key specifications are material (7075-T6 aluminium or steel), slot standard (MIL-STD-1913 Picatinny versus Weaver — always prefer Picatinny for consistency and scope mount compatibility), built-in cant measured in MOA, overall length, and the number and thread pitch of mounting screws. For the CZ 457, rails typically use two 6-48 screws, though some aftermarket options add a recoil lug or additional screws for rigidity. A 0 MOA rail is appropriate if your scope has ample internal elevation adjustment for your intended distances. A 20 MOA rail is common for centrefire long-range work, but for rimfire at 50–200 yards many UK shooters find 10 MOA or even 0 MOA sufficient, especially with a scope like the March Match Pro ED which offers generous internal travel.

Budget tiers for CZ 457 Picatinny rails in the UK market break down roughly as follows. Below £30 you find the factory-supplied rail and basic aftermarket options — functional but often with visible machining marks and less precise slot spacing. Between £40 and £80, brands like Talley, Warne, and various CNC-machined options from UK-based small manufacturers offer noticeably better fit and finish, often with anodised surfaces and tighter tolerances. Above £80, you enter the territory of premium rails from the likes of Area 419, MDT, and Seekins — these are machined to very tight specs, sometimes with integrated recoil lugs and guaranteed MOA cant values. For a build of this calibre, the £50–£100 bracket represents excellent value without cutting corners.

A common mistake UK buyers make is choosing a rail with too much built-in MOA elevation for rimfire use. A 20 MOA rail designed for centrefire bolt rifles at 1,000 yards will push your scope's mechanical zero uncomfortably close to the bottom of its adjustment range when zeroing at 50 yards with .22 LR. This leaves you with limited downward adjustment and an off-centre erector tube, which can degrade image quality and tracking consistency. For most UK rimfire applications — 25 to 100 yards, occasionally 200 — a 0 MOA or at most a 10 MOA rail is the pragmatic choice. Always check your scope's total elevation adjustment and calculate where your mechanical centre will sit after accounting for the rail cant.

In the UK context, .22 LR rimfire rifles like the CZ 457 MTR require a Firearms Certificate issued by your local police force. This is not an air rifle build, so the sub-12 ft-lb and FAC air rifle distinction does not apply here, but it is worth noting that the same CZ 457 action is available in .17 HMR and other chamberings that may have different ballistic requirements for rail cant. UK retailers such as RUAG, Hannams Reloading, Highland Outdoors, and numerous online dealers stock aftermarket rails, though availability can be patchy for niche items — ordering direct from manufacturers or via specialist importers is common. Always confirm thread pitch and hole spacing before ordering, as some rails marketed for the CZ 455 do not fit the 457 without modification.

Matching the rail to your specific use case matters more than brand prestige. If you shoot primarily at 50 yards on an indoor range, a 0 MOA rail and medium-height rings will serve you perfectly. If you compete at varying distances out to 200 yards, consider a 10 MOA rail to preserve downward adjustment while giving you enough travel to dial for drop at range. The ARC M-Brace chassis has an adjustable cheek riser, which means you can accommodate slightly taller rings if needed — but do not default to high rings without checking that your cheek weld remains natural and repeatable. A scope as optically capable as the March Match Pro ED, with its ED glass and fine reticle, deserves a mounting solution that does not compromise its mechanical precision or your ability to use it comfortably.

The broader brand landscape for rimfire scope rails and mounts includes well-known names such as Vortex (whose own-brand rings and rails offer solid value), Leupold (with their Mark 4 and BackCountry bases), and specialist manufacturers like Area 419, Hawkins Precision, and MDT. For rings specifically, many UK rimfire shooters trust Hawkins, Spuhr, or the Vortex Precision Matched rings for consistent clamping force and zero retention. March scopes, including the Match Pro ED, use a 30mm tube, so ensure your rings are matched accordingly. Bushnell, Athlon, and Zeiss also produce excellent rimfire-suitable optics if you are still finalising your scope choice, but the March's reputation in UK precision rimfire circles is well earned and the mounting hardware should reflect that investment.