B5 Systems

B5 Systems Enhanced SOPMOD Stock Mil-Spec for AR-15

Name: B5 Systems Enhanced SOPMOD Stock Mil-Spec for AR-15
Brand: B5 Systems
SKU: SOP-1074

£139.99

VAT included.

£5 Tracked Delivery · 7–10 Business Days

Estimated delivery: Thu 10 Sep – Tue 15 Sep

Stock is imported from the USA to us, then shipped to you from the UK — we cover all duties and import charges, so there is nothing to pay on delivery.

Colour: Black

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Product Overview

The B5 Systems Enhanced SOPMOD is a collapsible carbine stock for AR-15 and M4 rifles, fitting any Mil-Spec-diameter carbine receiver extension.

A stock built for hard service — the Enhanced SOPMOD gives a carbine a rear end that soaks up abuse.

The B5 Systems Enhanced SOPMOD Stock is the commercial version of the SOPMOD-pattern furniture B5 Systems is known for. The wide SOPMOD cheek weld — a pattern shooters consistently rate among the most comfortable ever fitted to a carbine — pairs with water-resistant storage compartments on both sides and ambidextrous QD sling sockets, all moulded in glass-filled polymer.

On a Mil-Spec carbine extension it locks up tight and adjusts positively, giving duty and hard-training rifles a rear end that takes punishment and keeps batteries dry while doing it. This is what "buy once" looks like in a carbine stock.

Why shooters choose the Enhanced SOPMOD

Wide SOPMOD cheek weld — comfortable and highly repeatable
Water-resistant storage both sides — batteries and spares protected
Ambidextrous QD sockets — sling rigging for either shoulder
Glass-filled polymer body — dense, solid and hard-wearing
Five colourways — Black, FDE, Coyote Brown, ODG, Wolf Grey

What the Enhanced SOPMOD fits

Fits AR-15/M4 rifles running a Mil-Spec-diameter carbine receiver extension (buffer tube) — slide it on, set your length, load the compartments. Commercial-diameter tubes are oversized and will not take this stock, so check your tube specification before ordering. The QD sockets accept standard push-button quick-detach sling swivels, and the compartments seal against splash and weather rather than being fully submersible.

Specifications

Platform	AR-15 / M4
Fits	Mil-Spec carbine receiver extension
Type	Collapsible carbine stock with storage
Material	Glass-filled polymer
Finish	Black, Flat Dark Earth, Coyote Brown, Olive Drab Green, Wolf Grey
Mount interface	Ambidextrous QD sling sockets
Brand	B5 Systems
MPN	SOP-1074 · SOP-1075 · SOP-1076 · SOP-1097 · SOP-1123

Built for hard service. Order the Enhanced SOPMOD today — in stock at Xtreme Tactical Gun Parts with £5 tracked UK delivery in 7–10 business days.

Explore more: Rifle & Shotgun Stocks, Precision Rifle Stocks, AR-15 Parts or browse all B5 Systems.

Compatibility & Fitment

Fits AR-15/M4 rifles with a Mil-Spec-diameter carbine receiver extension (buffer tube). Check your tube specification before ordering.

Please confirm platform, interface and fitment requirements before ordering.

Technical Specifications

Platform	AR-15 / M4
Fits	Mil-Spec carbine receiver extension
Type	Collapsible carbine stock with storage
Material	Glass-filled polymer
Finish	Black, Flat Dark Earth, Coyote Brown, Olive Drab Green, Wolf Grey
Mount interface	Ambidextrous QD sling sockets
Brand	B5 Systems
MPN	SOP-1074 · SOP-1075 · SOP-1076 · SOP-1097 · SOP-1123
SKU / MPN	SOP-1074
UPC / Barcode	814927020009

Shop Related Categories

Shop AR-15 Parts & Accessories View category

Shop B5 Systems View category

Shop B5 Systems Stocks View category

Shop Rifle & Shotgun Stocks View category

Related Buying Guides

Not sure which option is right for your build? These guides break it down.

Buying Guide How to Choose an AR-15 Stock: Fit, Length of Pull & Platform

Buying Guide Best AR-15 Upgrades Under £100 (That Actually Make a Difference)

Buying Guide B5 Systems: The SOPMOD Story — Bravo, CPS & P-Grip Explained

View all buying guides →

Product Questions

Does the Enhanced SOPMOD fit a standard carbine tube?

It fits AR-15/M4 rifles running a Mil-Spec-diameter carbine receiver extension. Commercial tubes are oversized and will not take this stock, so check your tube specification before ordering. Measuring the tube is the quickest way to be sure if the rifle came to you second-hand.

What do I get with the Enhanced SOPMOD that a plain stock does not have?

It has water-resistant storage compartments in the body for batteries, small spares or a cleaning kit, and QD sockets built in for sling attachment. The body is glass-filled polymer, which is what gives it the solid, dense feel compared with lighter mouldings. It is the fuller-featured stock in the B5 line rather than the minimalist option.

How do the QD sockets and compartments work in practice?

The QD sockets take standard push-button quick-detach sling swivels, so you can move the sling from side to side depending on how you shoot. The compartments seal against splash and weather rather than being fully submersible, so treat them as somewhere to keep spares dry rather than a waterproof case. Both features add a little bulk over a slimline stock, which is the trade-off.

Which colours are there and how does it compare with the Bravo?

Black, Flat Dark Earth, Coyote Brown, Olive Drab Green and Wolf Grey are offered. If you would rather have a slim, snag-free stock without compartments, the B5 Bravo stock is the lighter alternative on the same tube. Both sit alongside the rest of the range in B5 Systems stocks.

How is it shipped and what about returns?

This stock is dispatched from the United Kingdom with £5 tracked UK delivery in 7–10 business days, and you'll get tracking by email when it ships. If a part turns out to be the wrong fit, see our returns policy or contact us and we'll help sort it.