Optics & MountingBkl TechnologiesSold by Brownells

Bkl Technologies

Bkl Tech 500 Series Picatinny Adapters - 4'''' Dovetail To Weaver Adapter Mount

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

Aircraft-grade Aluminum

Adapter rail for Picatinny scope

Use Many

Bolt-action rimfire rifles

Six Crossbolts

Apply even pressure along the

Generous Cross

Slots provide more scope ring

Clamping Screws

Fit pre-drilled holes to help

$42.95
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SKU: 749012541

Overview

This adapter rail is designed to bridge common dovetail setups with Picatinny-style mounting options on many bolt-action rimfire rifles. Its six crossbolts are intended to distribute pressure evenly along the dovetail, helping the mount stay centered during installation. The rail’s open slot layout gives hunters and shooters more flexibility when choosing scope rings or optics, including a red dot sight for plinking or informal competition. Built from aircraft-grade aluminum with a hardcoat anodized matte finish, it offers a practical mounting solution without adding unnecessary bulk.

Why Hunters Choose the Bkl Technologies

Aircraft-grade Aluminum

Construction for a lightweight adapter

Fits Picatinny

Scope mounts on 3/8-inch or

Six Crossbolts

Apply even pressure to help

Generous Cross

Slots expand scope ring and

Clamping Screws

Fit pre-drilled holes for easier

Key Features

  • Aircraft-grade aluminum adapter rail for Picatinny scope 3/8" or European 11mm dovetail mounts.
  • Designed for use on many bolt-action rimfire rifles.
  • Six crossbolts apply even pressure along the dovetail to help keep the adapter centered.
  • Generous cross slots provide more scope ring and optics mounting options.
  • Clamping screws fit pre-drilled holes to help spread the legs for easier installation on oversized rails.
  • Extends approximately .620" above the dovetail.
  • 4" single rail weighs 3.1 oz.; two 1" rail sections weigh .75 oz. each.

Best Used For

  • Bolt-action rimfire owners needing a Picatinny or Weaver interface for 3/8" or 11mm dovetails
  • Shooters setting up a red dot sight on a dovetail-equipped rifle
  • Weekend plinkers wanting more scope ring and optics options
  • Informal competition shooters using a compact adapter rail on rimfire rifles
  • Users needing a 4-inch rail with multiple cross slots for flexible mounting

Specifications

Adapter TypePicatinny scope 3/8" or European 11mm dovetail mounts
Additional CompatibilityPerfect for mounting a red dog sight
Blade FinishHardcoat anodized, mat
Clamping ScrewsFit into pre-drilled holes to equally spread the legs
Cross SlotsGenerous cross slots
Crossbolts6
Height Above DovetailApproximately .620 in
MaterialAircraft-grade aluminum
Mounting CompatibilityBolt-action rimfire rifles
Rail Length4 in
Use CaseWeekend plinking or informal competition
Weight4" single rail weighs 3.1 oz; two 1" rail sections weigh .75 oz each

Pros

  • Aircraft-grade aluminum construction for a lightweight adapter rail setup
  • Fits Picatinny scope mounts on 3/8-inch or European 11mm dovetails
  • Six crossbolts apply even pressure to help keep the adapter centered
  • Generous cross slots expand scope ring and optics mounting options
  • Clamping screws fit pre-drilled holes for easier installation on oversized rails
  • Hardcoat anodized, matte finish adds a refined, low-glare appearance

Considerations & Trade-offs

  • Adds height above the dovetail, which can matter for cheek weld and optic clearance on some rifles.
  • Designed around 3/8" Picatinny and European 11mm dovetails, so compatibility is specific rather than universal.
  • The 4" single rail adds 3.1 oz., which is a modest but real addition for a rimfire setup.
  • The product is an adapter mount, so final optic fit still depends on the rings or sight chosen.

Suggested Comparisons

  • Dovetail-to-Picatinny adapter mounts
  • Rimfire scope mounting accessories
  • Red dot sight mounting rails
  • Weaver-style rail adapters

Suggested Accessories

  • Scope rings
  • Red dot sight
  • Picatinny rail accessories
  • Mounting hardware

Frequently Asked Questions

What type of rifles is this adapter rail designed to fit?

It is described as a Picatinny scope adapter for 3/8" or European 11mm dovetail mounts found on many bolt-action rimfire rifles.

How does the mount secure to the dovetail?

The description says six crossbolts apply even pressure along the length of the dovetail to help keep the adapter rail centered.

What optics or accessories can it support?

The rail has generous cross slots for added scope ring and optics choices, and it is specifically described as perfect for mounting a red dot sight.

How much does the 4-inch rail extend above the dovetail?

It extends approximately .620" above the dovetail.

What weight information is provided for this product?

The 4" single rail weighs 3.1 oz. The two 1" rail sections weigh .75 oz. each.