SIG MIL-SRD556-MONO

The SIG Sauer MIL-SRD556-MONO is a stainless steel monocore suppressor designed for 5.56mm/.223 rifles. This variant was a limited military overrun that SIG released to the commercial market.

The monocore design uses a single-piece baffle stack for durability. Direct thread 1/2x28 mounting fits most 5.56 rifles on the market. Wrench flats on the rear mount allow for secure torquing and provide a surface for pin-and-weld applications on barrels under 16".

Specifications (estimated, based on standard SRD556)

• Caliber: 5.56mm / .223
• Length: 6.4"
• Diameter: 1.625"
• Weight: 11.5 oz (MONO variant may be heavier)
• Material: Stainless steel monocore
• Mount: 1/2x28 direct thread
• Full-auto rated: Yes

Includes

• Suppressor
• box
• new condition with light handling marks

Note: This is a limited military overrun model. Specifications are estimated based on the standard SRD556. SIG does not publish official specs for the MIL-SRD556-MONO variant.