B5 Systems AR-15 Enhanced SOPMOD Stock Collapsible Mil-Spec FDE

B5 Systems Ar-15 Enhanced Sopmod Stock Collapsible Mil-Spec Fde - Stock & Brace for AR-15 - view 1
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B5 Systems

Overview

The B5 Systems AR-15 Enhanced SOPMOD Stock is a collapsible stock designed for Mil-Spec buffer tubes, made from durable polymer for reliable performance. Its FDE color provides a tactical aesthetic while ensuring a lightweight addition to your build. This stock is often found in 5.56 NATO caliber setups, where its adjustable length enhances versatility and user comfort.

Specifications

MPNSOP-1075
Tube SpecMil-Spec
MaterialPolymer
ColorFDE
Stock TypeCollapsible

Available Merchants(9)

Prices checked

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Brownells logo
Brownells
Free shipping over $99
Shipping Speed
In Stock
$95
Optics Planet logo
Optics Planet
Free shipping
Shipping Speed
In Stock
$95
Classic Firearms logo
Classic Firearms
Shipping varies
Shipping Speed
In Stock
$95
BattleHawk Armory logo
BattleHawk Armory
Shipping varies
Shipping Speed
In Stock
$95
KY Gun Company logo
KY Gun Company
Flat rate shipping
Shipping Speed
In Stock
$95
Ammunition Depot logo
Ammunition Depot
~$28.90 est. shipping
Shipping Speed
In Stock
$95
Palmetto State Armory logo
Palmetto State Armory
$9.99 shipping (free over $99)
Shipping Speed
In Stock
$96
Guns.com logo
Guns.com
Free shipping
Shipping Speed
Stock Unknown
$95
SO
Sportsmans Outdoor Superstore
Flat rate shipping
Shipping Speed
Out of Stock
$79

Build history on GunPartPicker

Builders have been adding the B5 Systems AR-15 Enhanced SOPMOD Stock Collapsible Mil-Spec FDE to their builds on GunPartPicker since February 2026. All time, it ranks #279 of the 444 stocks and braces builders have added.

Availability is good: it was in stock at one retailer or another nearly every day in August 2026, and today 7 of the 9 retailers we track have it in stock. The best price crept up from $62.49 to $86.99 over August 2026. Buying today, the lowest price is $95 at Brownells, above August's low of $62.49, so a better deal may come back.

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Frequently Built With

The part most often added in each category by the 6 builds that include this one

Build Configuration Breakdown

Aggregated and anonymized data showing how builders use this product

Platform

87.8%
AR-1587.8%
AR-109.9%
AR-92.3%

Caliber

73.5%
5.56 NATO73.5%
.223 Wylde8.8%
300 Blackout7.6%
.308 Win3.8%
9mm1.3%
Other5.3%

Gas System

50.7%
Mid-Length50.7%
Carbine28.3%
Rifle11.1%
Pistol8.9%
Blowback0.6%
Other0.3%

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