Fab Defense

Open Box Dealer Demo FAB Defense M4 Folding Buttstock for MP5 Black FX-M4MP5

Fab Defense Open Box Dealer Demo FAB Defense M4 Folding Buttstock for MP5 Black FX-M4MP5 - Stock & Brace for AR-15 - view 1
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Fab Defense

Overview

The Fab Defense Open Box Dealer Demo FAB Defense M4 Folding Buttstock for MP5 Black FX-M4MP5 is a stock & brace. Compare prices from multiple merchants and find the best deal.

Specifications

MPNFXM4MP5
ColorBlack
MaterialPolymer
Stock TypeFolding

Available Merchants(1)

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Optics Planet
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Out of Stock
$204
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August 2026 on GunPartPicker

Fab Defense Open Box Dealer Demo FAB Defense M4 Folding Buttstock for MP5 Black FX-M4MP5 ranked #43 of the 204 stocks and braces builders added on GunPartPicker in August 2026. Builders have been adding it to their builds on GunPartPicker since April 2026. All time, it ranks #70 of the 446 stocks and braces builders have added.

Availability is good: it was in stock at one retailer or another nearly every day in August 2026. Prices barely moved in August 2026, holding around $88.49, so there haven't been real sales lately.

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Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 35 retailers

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Check it against the live catalog:

Frequently Built With

The part most often added in each category by the 9 builds that include this one

Sharps Bros Showdown Stripped Lower Receiver - Black, Unique Design and High-Performance for Custom AR Builds - SBLR11

Sharps Bros Showdown Stripped Lower Receiver - Black, Unique Design and High-Performance for Custom AR Builds - SBLR11

Lower Receiver$285in 2 builds
Rise Armament Advanced Performance Trigger, Red - RA-535-RED-ARP

Rise Armament Advanced Performance Trigger, Red - RA-535-RED-ARP

Trigger$159in 2 builds
Geissele Automatics AR-15/M16 Super Charging Handle, Ddc

Geissele Automatics AR-15/M16 Super Charging Handle, Ddc

Charging Handle$105in 2 builds
Aero Precision M4E1 Threaded Complete Upper, 16" 5.56 Mid-Length Barrel w/ 15" ATLAS R-ONE M-LOK Handguard - FDE

Aero Precision M4E1 Threaded Complete Upper, 16" 5.56 Mid-Length Barrel w/ 15" ATLAS R-ONE M-LOK Handguard - FDE

Upper Receiver$594 · out of stockin 1 build
Strike Industries AR-15 Ambidextrous Safety Selector Switch - Red

Strike Industries AR-15 Ambidextrous Safety Selector Switch - Red

Safety$63in 4 builds
Strike Industries Cobra Billet Aluminum Trigger Guard - Red

Strike Industries Cobra Billet Aluminum Trigger Guard - Red

Trigger Guard$28in 4 builds

Build Configuration Breakdown

Aggregated and anonymized data showing how builders use this product

Platform

88%
AR-1588%
AR-109.7%
AR-92.3%

Caliber

73.4%
5.56 NATO73.4%
.223 Wylde8.8%
300 Blackout7.8%
.308 Win3.8%
9mm1.3%
Other5%

Gas System

50.8%
Mid-Length50.8%
Carbine28.2%
Rifle10.8%
Pistol9.3%
Blowback0.6%
Other0.3%

Builds Featuring This Part

See all 1 →

Builds in the community that include the Open Box Dealer Demo FAB Defense M4 Folding Buttstock for MP5 Black FX-M4MP5

BuildPartsTotal
LMT 8.2" 300 Blackout build
LMT 8.2" 300 Blackout		14$3567.71

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