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F5 MFG

F5 MFG ACR Modular Stock System with CZ Bren 2 Adapter

F5 ACR-style folding stock system with CZ Bren 2 adapter and adjustable comb/length settings.

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Quick Specs

Price
$230
Weight
1 lb 8 oz
Brand
F5 MFG
Category
stock

Features

  • F5 modular folding stock geometry
  • Adjustable length-of-pull
  • Adjustable cheek riser
  • Bren 2-specific adapter included
  • Polymer stock with billet aluminum adapter

Capability Boosts

Modularity+2

Recommended For

Duty/Patrol+2
duty+2
Competition+2
customization+2

Where to Buy

Compare current prices and availability from retailers we work with.

Optics Planet

F5 MFG CZ Bren 2 ACR Modular Stock System w/ Adapter, Black, 3in x 6in x10 in, F5-ACR-CZB-BLK

$233.99
Out of stock
1d ago
View offer

Compatibility Tags

family: modern-rifleplatform: cz-bren2-11platform: cz-bren2-14platform: cz-bren2-16

Overview

The factory CZ Bren 2 stock is a four-position folding unit that handles the basics well but lacks cheek-riser adjustment for high-mounted optics and offers a polymer-on-polymer fit that develops play over time. The F5 MFG ACR Modular Stock System swaps the factory stock for an F5 adjustable folding stock through a Bren 2-specific billet aluminum adapter.

The ACR stock geometry adds an adjustable cheek riser, which is critical when running an LPVO or magnified prism on the Bren 2's higher-than-typical optic deck. Length-of-pull is adjustable across a wider range than the factory four-position stock. The folding mechanism mirrors the factory side-fold direction, and the rifle remains operable with the stock folded.

This ACR-style configuration is the right fit for shooters who run the Bren 2 in a precision or duty role and want a more rigid, more adjustable stock than either the factory unit or the SB Tactical brace can provide. Pistol-configured Bren 2 Ms owners should stay with a brace unless the firearm is configured as a rifle or registered SBR.

Key Features

  • F5 modular folding stock geometry
  • Adjustable length-of-pull (more range than factory)
  • Adjustable cheek riser for high-optic-deck Bren 2 builds
  • Side-folds, rifle remains operable when folded
  • Bren 2-specific billet aluminum adapter included
  • Black ACR-style configuration partner listing

Pros

  • +Cheek riser adjustment is critical for LPVO and prism shooters on the Bren 2
  • +More LOP range than the factory four-position stock
  • +Folds in the same direction as the factory mechanism
  • +Competitive with the HBI G36 Stock Kit when stock is in

Cons

  • Rifle/SBR configuration only, not legal on a pistol-classified Bren 2 Ms
  • Higher total cost than a brace-only setup
  • Adds 24+ oz total weight, more than factory stock
  • Locks you into ACR stock ergonomics, which not every shooter prefers

Detailed Specifications

type
Folding modular stock system
adjustment
Adjustable LOP and cheek riser
Material
Modular stock with billet aluminum adapter
mount
Replaces factory stock and rear endcap
compatibility
CZ Bren 2 Ms rifle and SBR configurations
countryOfOrigin
USA
sku
F5-ACR-CZB-BLK
msrp
$229.99 partner price

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