SilencerCo Sig Sauer MPX Gas Defeating Charging Handle Black. We also increased our lever throw and strength of latch engagement in the upper. Say goodbye to blow back gasses from your AR pelting you in the face. Compared to similar products on the market SilencerCos new Gas Defeating Charging handle has a special quality: it actually works A proprietary design using an O-ring seal stops gas from blowing back into the shooters face a common problem with the AR. Your eyes will thank you. Specifications for SilencerCo Sig Sauer MPX Gas Defeating Charging Handle: Manufacturer: SilencerCo Color: Black Fabric/Material: 7075 Aluminum Gun Make: SIG Sauer Gun Model: SIG Sauer MPX Hand: Ambidextrous Features of SilencerCo Sig Sauer MPX Gas Defeating Charging Handle Ambidextrous design Machined from aircraft grade 7075 aluminum Ships with one O-ring already installed and one spare Package Contents: SilencerCo Sig Sauer MPX Gas Defeating Charging Handle What firearm models does the manufacturer say SilencerCo Sig Sauer MPX Gas Defeating Charging Handle is compatible with? The manufacturer says that SilencerCo Sig Sauer MPX Gas Defeating Charging Handle is compatible with SIG Sauer MPXSilencerCo AC5703: Sig Sauer MPX Gas Defeating Charging Handle Black