Your basket is empty.

Basket

Help and contact

Free standard delivery over £199

100-day return policy

Newsletter

Sale

Over 300,000 customers - we say thank you!

4.93/5 "Very good" (1400+ reviews)

40,000+ products for hunting and shooting sports

The Daniel Defense DDM4 300S boasts a 10.3" barrel, .30 caliber power, and a lightweight design, perfect for home defense, hunting, and tactical use.

DANIEL DEFENSE DDM4 300 S 10.3" 300 AAC BLACKOUT 1-8 9" DDM4 RAIL UPPER

815604015134 100024481

Restrictions

Is a 'Call to order' product.

Top takeaways

The Daniel Defense DDM4 300S is a short-barrel rifle upper receiver chambered in 300 Blackout, utilizing standard 5.56mm magazines and bolts for .30 caliber ammunition.
Features a hammer forged 10.3" chrome moly barrel with a 1-8 twist and a Strength-to-Weight (S2W) profile, alongside a hard coat anodized finish for durability.
Equipped with a 9" DDM4 Rail, a pinned low profile gas block, and a Daniel Defense extended flash suppressor, making it suitable for various applications including home defense and tactical use.

Attributes

Cartridge:
```
300 AAC Blackout
```
Colour:
```
Black
```
Contour:
```
Government
```
Finish:
```
Anodized
```
Length:
```
10.3''
```
Style:
```
Complete
```
Twist:
```
1-8
```
Weapon type:
```
AR-15
```
Delivery weight: 2.313kg
Shipping height: 102mm
Shipping width: 140mm
Shipping length: 711mm
UPC: 815604015134

Item details

Made in USA
US export classification: I(g)

Specifications:
Cartridge: 300 AAC Blackout
Color: Black
Contour: Government
Finish: Anodized
Length: 10.3''
Make: AR-15
Style: Complete
Twist: 1-8

1649.9 1649.9 1 GBP

1649.9 GBP £1,649.90

Prices inclusive of duty & VAT.

Product no.: 100024481

Mfr. No.: 23-088-19020-047

815604015134 The Daniel Defense DDM4 300S was designed for operators demanding a short-barrel rifle chambered in the popular 300 Blackout cartridge. Using standard 5.56mm magazines and bolts, the 300S is able to deliver .30 caliber ammunition with greater muzzle energy than comparable 5.56mm rifles. The Daniel Defense DDM4 300S also features a durable hard coat anodized finish and a hammer forged 10.3" chrome moly barrel with a 1-8 twist in a Strength-to-Weight (S2W) profile. Threaded Muzzle: 5/8 x 24 TPI Pinned low profile gas block machined from 4140 hardened steel, pistol length Daniel Defense 17-4 PH stainless steel extended flash suppressor Chrome lined M16 profile bolt carrier group 6061-T6 aluminum Daniel Defense 9" DDM4 Rail From home defense, target shooting, hunting to suppressed operation, and tactical applications, the Daniel Defense DDM4 300S is capable of delivering exceptional performance from a compact, fast-handling package.

Not available

Not available.

100-Day Return Policy

No charges until we ship

No charge:
Your credit card will not be charged when you place your order.

No commitments:
You are under no obligation until the goods are shipped. You can cancel your order at any time before shipping - free of charge.

Not until shipping:
Your credit card will only be charged once we ship your order. Not before.

Wish List Ask question

order by phone

1649.9 1649.9 1 GBP

Description Specification Customers reviews Accessories

DANIEL DEFENSE DDM4 300 S 10.3" 300 AAC BLACKOUT 1-8 9" DDM4 RAIL UPPER

1649.9 GBP £1,649.90

Prices inclusive of duty & VAT.

Is a 'Call to order' product.

Requires order by phone

Description:

Compact, High-Performance Upper Receiver for Serious Operators

The Daniel Defense DDM4 300S was meticulously designed for operators who require a short-barrel rifle chambered in the popular 300 Blackout cartridge. This upper receiver combines exceptional performance with a compact and fast-handling design.

Key Features:

Utilizes standard 5.56mm magazines and bolts for versatility.
Delivers .30 caliber ammunition with greater muzzle energy than comparable 5.56mm rifles.
Durable hard coat anodized finish for enhanced durability.
Features a hammer forged 10.3" chrome moly barrel with a 1-8 twist in a Strength-to-Weight (S2W) profile.
Threaded muzzle: 5/8 x 24 TPI.
Pinned low profile gas block machined from 4140 hardened steel, pistol length.
Equipped with a Daniel Defense 17-4 PH stainless steel extended flash suppressor.
Chrome lined M16 profile bolt carrier group.
Includes a 6061-T6 aluminum Daniel Defense 9" DDM4 Rail.

From home defense to target shooting, hunting, suppressed operation, and tactical applications, the Daniel Defense DDM4 300S is engineered to deliver exceptional performance in a compact, fast-handling package.

Restrictions

Is a 'Call to order' product.

Top takeaways

The Daniel Defense DDM4 300S is a short-barrel rifle upper receiver chambered in 300 Blackout, utilizing standard 5.56mm magazines and bolts for .30 caliber ammunition.
Features a hammer forged 10.3" chrome moly barrel with a 1-8 twist and a Strength-to-Weight (S2W) profile, alongside a hard coat anodized finish for durability.
Equipped with a 9" DDM4 Rail, a pinned low profile gas block, and a Daniel Defense extended flash suppressor, making it suitable for various applications including home defense and tactical use.

Attributes

Cartridge:
```
300 AAC Blackout
```
Colour:
```
Black
```
Contour:
```
Government
```
Finish:
```
Anodized
```
Length:
```
10.3''
```
Style:
```
Complete
```
Twist:
```
1-8
```
Weapon type:
```
AR-15
```
Delivery weight: 2.313kg
Shipping height: 102mm
Shipping width: 140mm
Shipping length: 711mm
UPC: 815604015134

Item details

Made in USA
US export classification: I(g)

Customers reviews

Customer ratings (0)

0 / 5

Oops! Something went wrong.

We encountered an error while loading this content. Please refresh the page to continue. If the issue persists, contact our customer support.

Site Navigation

Product Categories

Ordering

Customer Service

Connect

Secure payment methods

Trade Associations

Welcome!

to Brownells UK, your destination for anything gun related. With our roots in a genuine passion for firearms, we bring you an unmatched selection of Gun Parts, Firearm Accessories, Gunsmithing Tools, Scopes & Red Dot Sights and Expert Knowledge.

Whether you're looking to maintain, repair, or upgrade, we've got what you need!

For Shooters, By Shooters
We share your enthusiasm and know exactly what you're looking for because we're part of the community.

Massive Selection
From the essentials to the unique, find everything under one roof.

Our blend of tradition and innovation
Shop with the convenience of modern technology, backed by a legacy of experience.

Browse our collection and discover why we're the trusted name in shooting sports & hunting.