Sig Sauer MODX-45 | .45 ACP Titanium Suppressor

The Sig Sauer MODX-45 is a modular pistol suppressor designed for configurable length, weight and sound performance. It uses titanium baffles and stainless steel components and ships with pistons for both .578×28 and M16x1 LH threads. The design includes a fixed barrel spacer for carbine use and offers user adjustment for impact alignment.

Typical applications include suppressed range training and competition or configurable carbine use where reduced report and modular sizing are priorities.

Product Specifications

• The ATF type for this product is Silencer.
• The listed caliber is .45 ACP.
• The construction material is titanium and stainless steel.
• The finish is specified as Black Nitride.
• The overall length is configurable from 3.25 to 9.25 inches depending on the baffle configuration.
• The maximum listed length is 9.25 inches.
• The weight is approximately 8.75 ounces.
• The product includes pistons for .578×28 and M16x1 LH thread patterns.
• The thread pattern is listed as Multi.
• The attachment method is Direct Thread.
• The suppressor includes 2 pistons as standard accessories.
• The unit is specified as full-auto rated: No.
• This design features modular titanium baffles that can be reconfigured to trade sound reduction for reduced length and weight.
• The package includes a fixed barrel spacer intended for carbine use.
• The ATF manufacturer is SIG SAUER INC. and the ATF model is MODX-45.
• UPC: 798681613120.

The MODX-45 balances lightweight materials and modularity for shooters who need configurable suppression without unnecessary complexity. Its user-configurable baffle stack and included imperial and metric pistons let operators tailor length and compatibility for a range of pistols and short-barreled carbines. Whether prioritizing a reduced profile for competition or dialing in a setup for extended range sessions, the MODX-45 provides a practical, adjustable solution that emphasizes mechanical simplicity and serviceability.