Rings, Mounts & BasesBadger OrdnanceSold by Brownells

Badger Ordnance

Remington 40x, M40a3, M40a5 Lugged Scope Rail - Remington 40x, M40a3, M40a5 Bottom Lug Scope Rail 30 Moa

Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.

One-piece Mil-std

1913 Picatinny scope base for

Allows Fast,

Simple changes to eye relief

Fits Only

Clip slot feature of the

Machined From

Pre-hardened, ordnance-grade 4142 carbon steel

Finished Matte

Matte black mil-spec manganese phosphate

$203.99
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SKU: 093000134

Overview

Built for Remington 40X and M700 actions modified to USMC M40A3/A5 specification, this one-piece Picatinny scope base is intended for serious long-range bolt-rifle setups. Its design supports flexible scope selection and makes eye relief changes straightforward when dialing in a rifle for precision use. The integral recoil lug is meant to keep the mount secure and stable, while the matte black Parkerized finish gives it a restrained, duty-oriented look. Fit is limited to the clip slot feature on compatible actions, so it is a specialized component rather than a universal base.

Why Hunters Choose the Badger Ordnance

One-piece Mil-std

1913 Picatinny base supports flexible

Allows Fast,

Simple changes to eye relief

Fits Clip

Slot feature of Remington 40X

Machined From

Pre-hardened, ordnance-grade 4142 carbon steel

Integral Recoil

Lug for a stable mount

Key Features

  • One-piece MIL-STD 1913 Picatinny scope base for Remington 40X and M700 actions modified to USMC M40A3/A5 spec.
  • Allows fast, simple changes to eye relief.
  • Fits only the clip slot feature of the specified Remington action.
  • Machined from pre-hardened, ordnance-grade 4142 carbon steel.
  • Finished with matte black mil-spec manganese phosphate Parkerizing.
  • Integral recoil lug adds a stable mounting interface.

Best Used For

  • Hunters using Remington 40X or M700 actions modified to USMC M40A3/A5 spec
  • Long-range rifle setups needing a one-piece Picatinny scope base
  • Users wanting flexible scope selection and easier eye relief adjustment
  • Tactical bolt-rifle owners seeking a heavy-duty, lugged mounting solution

Specifications

Blade FinishMatte black mil-spec manganese phosphate Parkerized finish
ColorBlack
CompatibilityFits only the clip slot feature of the Remington 40X action or M700 model action modified to the USMC M40A3/A5 spec
Eye Relief AdjustmentEnables fast, simple changes to eye relief
MaterialPre-hardened, ordnance-grade 4142 carbon steel
Moa30 MOA
Mount TypeOne-piece MIL-STD 1913 Picatinny scope base
Product TypeScope base
Recoil LugIntegral recoil lug

Pros

  • One-piece MIL-STD 1913 Picatinny base supports flexible scope selection.
  • Allows fast, simple changes to eye relief.
  • Fits the clip slot feature of Remington 40X and M40A3/A5-spec actions.
  • Machined from pre-hardened, ordnance-grade 4142 carbon steel.
  • Features an integral recoil lug for a stable mount.
  • Matte black mil-spec manganese phosphate Parkerized finish.

Considerations & Trade-offs

  • Fits only the clip slot feature of the Remington 40X action or an M700 action modified to USMC M40A3/A5 specification, so compatibility is narrow and should be verified before purchase.
  • This is a one-piece MIL-STD 1913 Picatinny scope base, which offers flexibility in optic selection but is more specialized than a simple low-profile base.
  • The 30 MOA setup is intended for long-range use, so it may be less suitable if you do not need that amount of elevation bias.
  • The heavy-duty, tactical design is purpose-built for a specific rifle platform and use case, so it is not a general-purpose mounting solution.

Suggested Comparisons

  • Scope bases and rails
  • Picatinny scope mounts
  • Long-range rifle mounting accessories
  • Bolt-action rifle optics bases

Suggested Accessories

  • Scope rings
  • Long-range rifle scope
  • Torque wrench
  • Thread locker

Frequently Asked Questions

What actions does this scope rail fit?

According to the product data, it fits only the clip slot feature of the Remington 40X action or an M700 model action modified to the USMC M40A3/A5 spec.

Is this a one-piece Picatinny base?

Yes. The long description identifies it as a versatile, one-piece MIL-STD 1913 Picatinny scope base.

Does the rail include a recoil lug?

Yes. The description states that it has an integral recoil lug.

What finish does the rail have?

It is described as having a matte black mil-spec manganese phosphate Parkerized finish.

Can this rail help with scope setup changes?

The product description says it provides flexibility in scope selection and enables fast, simple changes to eye relief.