Product DescriptionThe Atrius Development Group X-Series Forced Reset Selector is an ambidextrous selector engineered for SIG Sauer gas piston platforms. Built from durable 4140 steel with a heat-treated finish, this selector is designed for dependable performance and long-term durability. The X-Series features Atrius&'; original ambidextrous selector switch design and a new trip system with a trip base and trip clutch, helping provide universal fitment across compatible platforms. Designed as a drop-in-ready component, it installs without required modifications and is dimensionally compatible with MCX and MPX product lines.Product Highlights Ambidextrous forced reset selector designed for compatible SIG Sauer MCX, MPX, Rattler, and MCX-SPEAR LT platforms Constructed from rugged 4140 steel for strength, wear resistance, and reliable firearm performance Heat-treated finish helps enhance durability in demanding use conditions Features a new trip system with trip base and trip clutch for broader gas piston platform compatibility Drop-in-ready installation with no modifications necessary for supported applications Specs Brand: ATRIUS DEVELOPMENT GROUP Manufacturer Part Number: ADG-FRS-AMBI-X UPC: 850079014107 Product Type: Forced Reset Selector Series: X-Series Hand: Ambidextrous Color: Black Material: 4140 Steel Finish: Heat Treated Style: Atrius Ambi Selector Switch Configuration: Safe, Semi, Super-Semi Compatibility: SIG Sauer MCX-Rattler, SIG Sauer MCX-SPEAR LT, SIG Sauer MCX, SIG Sauer MPX Platform Type: SIG Sauer gas piston platforms Installation: Drop-In Ready, No Modifications Necessary Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product&';s manufacturer.