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The CZ 457 is one of the most respected rimfire platforms out there, and if you want to get the most out of it, a quality scope base goes a long way. This EGW HD Picatinny rail replaces fuss with a continuous one-piece mounting surface, built specifically to sit on the 11mm dovetail of the CZ 457 action. It's a 0 MOA base, meaning it runs parallel with no built-in cant, which is exactly what you want for the typical rimfire distances most folks shoot.
EGW machines these in-house from solid 7075 T6 aircraft-grade aluminum, which is noticeably stronger and stiffer than the more common 6061 you see on budget mounts. After machining, each rail gets tumbled, sand blasted, and Type III hardcoat anodized in a matte black finish, so it holds up to real use and years of range time. The whole thing weighs in around 4.6 ounces and measures roughly 6.3 inches of usable rail, with a height of about .540 inch from the top of the receiver to the top of the Picatinny.
The full-length MIL-STD-1913 cross slots are the real draw here. They let you slide your rings forward or back to dial in proper eye relief and a comfortable cheek weld, which matters whether you're plinking, running NRL22, or working a precision rimfire course. Because it's a true Picatinny profile, it plays nice with any standard Picatinny or Weaver rings, and it's compatible with quick-disconnect ring setups too. Keep in mind rings and an optic are not included, so you'll want those on hand before install.
Installation is straightforward with the included #6-32 x 3/4 screws and T-15 bit. EGW suggests snugging the screws to around 20 inch-pounds with a drop of blue thread locker to keep everything locked in under recoil and travel. The entire mount and its hardware are made in the USA, right down to the packaging.
This rail is designed specifically for the CZ 457 receiver and its 11mm dovetail. EGW makes separate mounts for the 455 and 452, so you'll want the correct model for those actions. A 452 mount will physically fit a 457, but it won't fully cover the receiver the way this dedicated 457 base does.
A 0 MOA base is a parallel mount with no built-in forward cant, so your scope sits level with the bore. EGW recommends the 0 MOA option for shooting roughly 0 to 150 yards, which covers the vast majority of rimfire work. If you plan to stretch out toward longer distances regularly, the 20 MOA version is worth a look.
No, rings and an optic are sold separately. The base ships with the #6-32 x 3/4 mounting screws and a T-15 bit to attach it to your rifle. Since it's a true Picatinny profile, you can pair it with any standard Picatinny or Weaver-style rings you prefer.
Mount it to the 11mm dovetail using the included screws and T-15 bit. EGW recommends around 20 inch-pounds of torque along with a drop of blue thread locker to keep everything secure under recoil and transport. A proper torque wrench takes the guesswork out and helps avoid over-tightening.
| UPC | 841370112111 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 80930 |
| Color | Black |
| Length | 9.0500 |
| Model | |
| Style | Picatinny Rail |
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