Product Description

ASE Utra S Series SL4 SMG 9mm Sound Moderator

Compact Performance for 9mm Carbines

Looking for a compact sound moderator that keeps your 9mm platform fast, balanced and reliable? The ASE Utra S Series SL4 SMG is engineered specifically for 9×19mm firearms, delivering effective sound moderation in an exceptionally short and lightweight package.

Whether fitted to an MP5-pattern carbine, a pistol-calibre carbine (PCC) or another compatible 9mm platform, the SL4 offers durable construction and dependable performance without adding unnecessary bulk.

Designed for 9mm Platforms

The SL4 SMG has been developed for shooters who want a practical moderator that complements the handling characteristics of compact firearms.

Key Features

• Purpose-built for 9×19mm firearms.
• Adds approximately 75mm to the overall length of the firearm.
• Lightweight design at approximately 280g to help preserve handling and balance.
• Manufactured from 300-series stainless steel using precision casting and fully welded construction for long service life.
• Compact profile ideal for short-barrelled carbines and PCCs.

Effective Sound Moderation

The ASE Utra SL4 SMG is designed to reduce muzzle blast while maintaining the compact handling expected from a dedicated SMG/PCC moderator.

Manufacturer figures indicate sound reduction of approximately:

• 13–16 dB measured 1 metre to the left of the muzzle.
• 13–15 dB at the shooter’s ear.

Actual performance will vary depending on the firearm, ammunition, barrel length and environmental conditions.

By reducing muzzle blast, the SL4 helps create a more comfortable shooting experience while maintaining the handling characteristics of compact 9mm platforms.

Engineered for Reliable Cycling

Unlike many compact sound moderators, the SL4 has been designed to minimise the effect on firearm operation.

Features include:

• Low back-pressure design to help reduce gas blowback.
• Engineered to minimise increases in bolt velocity.
• Helps maintain reliable cycling across a range of suitable ammunition.
• Reduced fouling compared with higher back-pressure designs.

The result is a moderator that supports reliable operation without significantly altering the balance or shooting characteristics of your firearm.

Durable Stainless Steel Construction

Built to withstand regular use, the SL4 features:

• Fully welded construction.
• Corrosion-resistant 300-series stainless steel.
• Tough blasted stainless finish.
• Robust design suitable for intensive sporting and professional use.

Ideal For

The ASE Utra S Series SL4 SMG is well suited to:

• 9mm PCC owners.
• MP5-pattern carbines.
• Practical and gallery rifle shooters.
• Shooters looking for a compact, lightweight moderator.
• Anyone wanting a durable stainless steel moderator for regular use.

Specifications

Compact. Durable. Dependable.

The ASE Utra S Series SL4 SMG is designed for shooters who value compact dimensions, reliable performance and robust construction. Its lightweight stainless steel design provides practical sound moderation while preserving the balance and handling of modern 9mm carbines, making it an excellent choice for regular range use and sporting applications in the UK.