Rifle PartsBravo CompanySold by Brownells

Bravo Company

Mod 2 Sopmod Stock - Mod 2 Sopmod Stock Widebody Black

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

Bcm Stock

Kit includes the Mod 2

Mk2 Receiver

Extension is approximately 3/4 inch

Receiver Extension

Is 7076T6, 8-position, and mil-spec

Includes Mil-spec

M16A4 rifle action spring and

Epm4 End

Plate includes a mount for

$67.95
View on Brownells

You'll be taken to Brownells to complete your purchase.

Hunter's Outpost earns a commission from affiliate links at no extra cost to you.

SKU: 430106494

Overview

This stock kit is built for shooters who want a complete, mil-spec diameter setup with the Mod 2 stock, MK2 receiver extension, spring, buffer, end plate, and locking nut included. The configuration is suited to carbine builds where a slightly longer receiver extension and an 8-position adjustment range are useful for dialing in fit. BCM describes the Mod 2 stock as an upgrade over the baseline M4 accessory, with enhanced ergonomics and durability. It is a straightforward option for hunters and rifle owners assembling a dependable, purpose-driven rifle setup.

Why Hunters Choose the Bravo Company

Complete Stock

Kit includes receiver extension, spring,

Mil-spec Diameter,

Eight-position receiver extension supports adjustable

Mk2 Receiver

Extension is approximately 3/4 inch

Epm4 End

Plate includes a mount for

Mod 2

Stock is described as offering

Key Features

  • BCM Stock Kit includes the Mod 2 stock and MK2 RMS components.
  • MK2 receiver extension is approximately 3/4 inch longer than carbine.
  • Receiver extension is 7076T6, 8-position, and mil-spec diameter.
  • Includes Mil-Spec M16A4 rifle action spring and MK2 Mod 1 T0 buffer.
  • EPM4 end plate includes a mount for QD swivel.
  • Mod 2 stock is described as a patented, recontoured design with enhanced ergonomics and durability.

Best Used For

  • Hunters building a carbine setup with an extended receiver extension and mil-spec components
  • Users wanting a stock kit with included buffer, spring, end plate, and castle nut
  • Shooters prioritizing a compact, black Mod 2 stock with enhanced ergonomics
  • Owners replacing a baseline M4 accessory with a complete BCM stock kit
  • Builders who want a widebody stock package for a rifle setup with QD swivel mounting

Specifications

Action SpringMil-Spec M16A4 Rifle Action Spring
BufferBCM MK2 Mod 1 - T0 Buffer
Buffer Weightapproximately 3.8oz
Country Of OriginHartland, WI
Durabilitynext-level durability
End PlateBCM EPM4 End Plate
End Plate Featureinclude mount for QD swivel
Ergonomicsenhanced ergonomics
Locking NutLocking Nut (Castle Nut) M4
Patent NumberD901616
Receiver ExtensionBCM MK2 Receiver Extension
Receiver Extension DiameterMil-Spec diameter
Receiver Extension Lengthapproximately 3/4" longer than carbine
Receiver Extension Material7076T6
Receiver Extension Positions8 position
Stock IncludedBCM Stock Mod 2 - Black

Pros

  • Complete stock kit includes receiver extension, spring, buffer, end plate, and locking nut.
  • Mil-Spec diameter, eight-position receiver extension supports adjustable fit.
  • MK2 receiver extension is approximately 3/4 inch longer than carbine.
  • EPM4 end plate includes a mount for a QD swivel.
  • Mod 2 stock is described as offering enhanced ergonomics.
  • Made by Bravo Company in Hartland, Wisconsin.

Considerations & Trade-offs

  • Includes a full stock kit rather than a standalone stock, so it is meant for a complete setup and not a simple drop-in replacement.
  • The MK2 receiver extension is approximately 3/4" longer than carbine, which may affect fit and setup expectations for users comparing it to standard carbine-length components.
  • The kit is specified as Mil-Spec diameter, so compatibility depends on matching Mil-Spec parts rather than commercial-diameter components.
  • The product description emphasizes enhanced ergonomics and durability, but it does not provide detailed technical specs for materials or performance beyond the included components.

Suggested Comparisons

  • AR-15/M4 stock assemblies
  • Receiver extensions and buffer tube kits
  • Mil-spec carbine stock upgrades
  • QD sling mount end plates

Suggested Accessories

  • QD swivel
  • Rifle sling
  • Armorer's wrench
  • Buffer tube cover

Frequently Asked Questions

What is included in this BCM stock kit?

The kit includes the BCM Stock Mod 2 in black, BCM MK2 Receiver Extension, Mil-Spec M16A4 Rifle Action Spring, BCM MK2 Mod 1 - T0 Buffer, BCM EPM4 End Plate with mount for a QD swivel, and a Locking Nut (Castle Nut) M4.

Is this stock kit mil-spec diameter?

Yes. The BCM MK2 Receiver Extension is listed as Mil-Spec diameter.

How many receiver extension positions does this kit have?

The BCM MK2 Receiver Extension is listed as 8 position.

Does this kit include a QD swivel mount?

Yes. The BCM EPM4 End Plate includes a mount for a QD swivel.

What does the product description say about the Mod 2 stock design?

The description says the BCM Mod 2 stock is an improvement over the baseline M4 accessory, with enhanced ergonomics and next-level durability. It is also described as recontoured into a patented semi-club shape.