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  Top » Catalog » SRM

OSS Signature Reduction Module


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OSS Signature Reduction Module

As the name implies, this device was designed and engineered specifically to reduce visual and sound signature. The SRM is placed in line after the BPR.   The SRM can be built to achieve whatever signature level reduction is necessary. Generically speaking for a standard M4, an SRM 4 will bring the decibel level well below ear safe. As with all OSS modular components, it is for the operator to decide which components offer the greatest advantage for each mission or operational environment.
The size of the SRM is determined by the mission-specific signature reduction requirements ranging in length from 2.3 to 5 inches.

As with the BPR, each SRM is caliber convertible and can be used with your BPR on multiple weapon platforms.  This capability also allows for the use of all types of training ammunition.


Designed specifically to reduce visual and audio signature
Exception decibel reduction
Built as per operator preference, minimum recommended is SRM™3. Largest available is SRM 6
Proprietary Thread Attachment
Self tightening
Multi caliber convertible
End user serviceable
100 percent sustainable
SRM component is included with every BPR1 to complete the suppressor system.


Weapon System Overall Length Increase
Unit Length Behind/In Front of The Flash Hider
Unit Weight in Front of the Muzzle with the BPR1
Total Unit Weight
Point of Impact Shift from 32 F to 600 F (0 C to 315 C)
Peak Visual Signature Including 1st Round
Avg Decible Level Cold (Under 200F/93C)
Avg Decible Level Hot (Over 400F/205C)
Avg Decible Level Hot (Sustained Auto Fire)
Bolt Velocity/Rate of Fire Increase%
Mirage Intensity Reduction on line of Sight
Automatic Fire Capable
Caliber Convertible
Maintenance Sustainment Rate – 20 RPM
Maintenance Sustainment Rate – 60 RPM
Maintenance Sustainment Rate – 850 RPM (3-5 Round Burst)
4.2 in / 10.67 cm*
4.2 in / 10.67 cm*
11.3 oz / .32 kg*
8.7 oz / .25 kg
Less than .5 MOA / .14 Mil
Less than 3.0 Lux
138 db*
139 db*
142 db*
Less than 6%
Lifetime of the barrel
Lifetime of the barrel
Lifetime of the barrel


OSS Suppressors

Manufacturer Info
OSS Suppressors Homepage
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Knesek Guns is your top source for guns for sale online

Knesek Guns, Inc. (KGI) is the worlds largest supplier specializing in military & law enforcement type firearms and equipment. We offer the widest selection of AR15 Type Rifles, Sniper Rifles, Grenade Launchers, Tactical Gear, Tactical Accessories and optics. We provide custom hunting and sport shooting firearms, if you have requested modifications please contact us to discuss your needs.

Machine Gun Sales and Purchases
We regularly accept trade and purchase offers for pre-86 (full auto) machine guns. Please send us information, accessories and photos (if possible) if the item(s) you wish to trade or sell.

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Extra Info
This product was added to our catalog on Monday 03 November, 2014.
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KGI is fully licensed an qualified to assist you with any ITAR-related licenses and agreements issued by the US Department of State, Directorate of Defense Trade Controls (DDTC). These include: DSP-5: Permanent Export License, DSP-61: Temporary Import License, DSP-73: Temporary Export License, DSP-85: Classified Export License. All prices listed are for United States domestic sales only The majority of the products which Knesek Guns sells require US State Department or Department of Commerce approval and an export license before they are able to be shipped.

We look forward to working with you as your international supplier. Please contact us at the following url: http://www.gun-export.com/contact-us or directly at international@knesekguns.com if you have any questions.
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