Stock PartsB5 SystemsSold by Brownells

B5 Systems

Ar-15 Accessory Cheek Piece - Ar-15 Accessory Cheek Piece Coyote Brown

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

Fits All

Variants of the B5 Collapsible

Mounts Adjusts

Using the undercuts found on

Adds 3/8"

Of height and horizontal adjustment

Made Mil-spec

Materials and finish

Includes Soft

Overmold for increased comfort

$19.95
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SKU: 430104493

Overview

Designed for shooters using the B5 Collapsible Precision Stock, this cheekpiece adds a practical adjustment point for dialing in cheek placement on an AR-15 setup. It mounts through the stock’s undercuts and provides 3/8" of added height along with horizontal adjustment, helping tailor the interface to the rifle and the shooter. A soft overmold adds comfort, while the Mil-Spec materials and finish keep the design straightforward and purpose-built. Available in standard colors, it is a compact accessory for refining stock fit without changing the overall setup.

Why Hunters Choose the B5 Systems

Fits All

Variants of the B5 Collapsible

Mounts Adjusts

Through the CPS undercuts for

Adds 3/8

Inch of height and horizontal

Soft Overmold

Added comfort at the cheek

Made Mil-spec

Materials and finish

Key Features

  • Fits all variants of the B5 Collapsible Precision Stock (CPS).
  • Mounts and adjusts using the undercuts found on the CPS.
  • Adds 3/8" of height and horizontal adjustment for cheek placement.
  • Made of Mil-Spec materials and finish.
  • Includes a soft overmold for increased comfort.
  • Available in standard colors, including Coyote Brown.

Best Used For

  • Users running a B5 Collapsible Precision Stock who want adjustable cheek placement.
  • Shooters needing added cheek height and horizontal adjustment for a more consistent stock weld.
  • Precision-oriented rifle setups where a compact, lightweight accessory is preferred.
  • Hunters using compatible AR-15 platforms and seeking a simple stock fit adjustment.

Specifications

Added Height3/8 in.
Available ColorsAll standard colors
Blade FinishMil-Spec finish
CompatibilityFits all variants of the B5 Collapsible Precision Stock (CPS)
Horizontal AdjustmentYes
Length4.50 in.
MaterialMil-Spec materials
Mounting MethodMounts and adjusts via the undercuts found on the CPS
OvermoldSoft overmold
Weight2.00 oz.
Width2.43 in.

Pros

  • Fits all variants of the B5 Collapsible Precision Stock (CPS).
  • Mounts and adjusts through the CPS undercuts for a secure fit.
  • Adds 3/8 inch of height and horizontal adjustment for cheek placement.
  • Soft overmold provides added comfort at the cheek contact point.
  • Made of Mil-Spec materials and finish.
  • Available in all standard colors, including Coyote Brown.

Considerations & Trade-offs

  • Fits only the B5 Collapsible Precision Stock (CPS), so compatibility is limited to that stock family.
  • Adds 3/8" of height and horizontal adjustment, which is useful for cheek placement but may not suit every shooter’s preferred setup.
  • The soft overmold is intended for comfort, but it also adds another fitted component to the stock assembly.
  • At 2.00 oz., it is a small addition, but it still changes the stock’s profile and balance slightly.

Suggested Comparisons

  • AR-15 stock accessories
  • Cheek risers and cheek pieces
  • Precision rifle stock upgrades
  • Rifle stock adjustment accessories

Suggested Accessories

  • Rifle stock accessory
  • Cheek riser pad
  • AR-15 stock adjustment accessory
  • Rifle sling

Frequently Asked Questions

What stocks is this cheek piece designed to fit?

It fits all variants of the B5 Collapsible Precision Stock (CPS).

How does the ACP attach to the stock?

It mounts and adjusts via the undercuts found on the CPS.

What does the cheek piece change for the shooter?

The ACP adds 3/8" of added height and horizontal adjustment to help with cheek placement.

What materials or finish are listed for this accessory?

The product states it is made of Mil-Spec materials and finish, and it includes a soft overmold for increased comfort.

What are the listed size and weight specifications?

The listed specs are 2.00 oz. weight, 4.50 in. length, and 2.43 in. width.