The BCM Lower Receiver Group with MK2 Receiver Extension & Stock Mod 0 SOPMOD is a premium choice for firearm enthusiasts seeking versatility and reliability in their AR-15 lower receiver. Engineered by BCM, a trusted name in the industry, this multi-caliber lower receiver is designed to accommodate various calibers, making it an ideal foundation for a custom build or an upgrade to your existing setup. The inclusion of the MK2 RMS and the BCM Gunfighter Stock ensures enhanced stability and comfort, while the MOD 0 SOPMOD Stock provides superior ergonomics for improved handling and accuracy. The BCM MK2 Receiver Extension further enhances the durability and performance of this lower receiver group, making it a robust option for both recreational shooting and tactical applications. Featuring the BCM PNT Trigger, this lower receiver offers a smooth and consistent trigger pull, contributing to precise shot placement and overall shooting satisfaction. The BCM Mod 0 Stock is crafted to provide a secure and comfortable shoulder fit, ensuring optimal control during operation. With its multi-caliber capability, this BCM Multi Caliber Receiver is perfect for those who value flexibility and adaptability in their firearms. Whether you're a seasoned shooter or a newcomer to the world of rifles, the BCM Lower Receiver Group with MK2 Receiver Extension & Stock Mod 0 SOPMOD is a reliable and high-quality choice that meets the demands of modern firearm enthusiasts.