NIELSEN SONIC Sonic 40 Compact 1/2 x 28 Max 7

The Nielsen Sonic 40 Compact is a short over-barrel silencer developed for smaller rifle calibres and cartridges with moderate powder capacity.

This version has Nielsen Sonic’s Max 7 bore specification and a 1/2×28 UNEF direct-thread mounting system. The Max 7 category is intended for compatible 6 mm, 6.5 mm, .270 and selected 7 mm-class rifles, subject to cartridge and pressure approval.

Its compact telescopic construction extends approximately 75 mm over the barrel and adds only about 117 mm to the firearm’s overall length. A steel core improves durability and heat resistance, while the 40 mm outside diameter provides useful internal volume without creating an excessively bulky profile.

Key features:

• Compact over-barrel silencer
• Nielsen Sonic Max 7 bore specification
• Suitable for compatible small- and medium-calibre rifles
• 1/2×28 UNEF direct-thread mounting
• Approximately 117 mm forward extension
• Approximately 75 mm rearward barrel overlap
• Durable steel core
• Knurled outer surface
• Modular and serviceable construction
• Maximum barrel diameter of approximately 23 mm
• Made in Denmark

Technical specifications:

• Brand: Nielsen Sonic
• Model: Sonic 40 Compact
• Product code: SC40-1/2X
• Bore classification: Max 7
• Intended projectile class: Nielsen Sonic’s 7 mm category
• Thread: 1/2×28 UNEF
• Thread pitch: 28 threads per inch
• Mounting system: Direct thread
• Construction: Over-barrel
• Overall length: Approximately 192 mm
• Forward extension: Approximately 117 mm
• Barrel overlap: Approximately 75 mm
• Diameter: Approximately 40 mm
• Weight: Approximately 310 g
• Maximum barrel diameter: Approximately 23 mm
• Core: Steel
• Outer surface: Knurled

Possible applications:

Depending on the rifle, cartridge and manufacturer approval, the Max 7 version may be suitable for calibres such as .243 Winchester, 6.5 Creedmoor, 6.5×55 Swedish and 7mm-08 Remington. Compatibility must be confirmed before use.

Compatibility notice:

The Max 7 designation refers to Nielsen Sonic’s maximum projectile-size category. It does not confirm compatibility based only on the cartridge name. The cartridge’s bullet diameter, pressure and powder capacity must also be suitable for the Sonic 40 Compact.

The general Sonic 40 Compact range includes larger bore options suitable for .300 AAC Blackout and other .30-calibre cartridges. This specific Max 7 version is not suitable for .30-calibre projectiles.

Confirm the rifle’s 1/2×28 UNEF muzzle thread, barrel diameter, available rearward clearance, shoulder dimensions and bore alignment before use.

Maintenance:

• Remove the silencer after use and allow it to dry completely.
• Avoid allowing the barrel or silencer to become excessively hot.
• Clean with suitable oil and a soft cloth when necessary.
• Avoid alkaline cleaners, ultrasonic cleaners and abrasive products.
• Regularly separate the modules and apply suitable thread grease if continued disassembly is required.

Please confirm stock before purchasing, as stock levels on this range can change rapidly. Product images are for illustration purposes and may differ slightly from the supplied item.