#html-body [data-pb-style=CIAC0T3]{justify-content:flex-start;display:flex;flex-direction:column;background-position:left top;background-size:cover;background-repeat:no-repeat;background-attachment:scroll}Build or upgrade your favorite AR-15 platform with the PSA 16" Midlength 5.56 NATO 1:7 Nitride B5 MLOK Upper. This complete barreled upper receiver features a 16-inch barrel chambered in the versatile 5.56 NATO caliber, treated with a durable nitride finish for exceptional wear and corrosion resistance. The mid-length gas system provides a smoother recoil impulse and reduced wear on internal components compared to shorter carbine systems, ensuring reliable cycling and fast follow-up shots. The receiver is equipped with a premium B5 Systems M-LOK handguard, offering a sleek, lightweight profile with ample rail space for mounting lights, lasers, and other tactical accessories. Built from forged 7075-T6 aluminum with a clean black anodized finish, this optics-ready upper receiver is designed for rugged durability in the field or at the range. Please note that this assembly does not include the bolt carrier group (BCG) or charging handle (CH), allowing you to customize your build with your preferred internal components.