This set includes a slick side upper receiver and a 9mm lower receiver, manufactured by Windham Weaponry.
This slick sided upper has a 9mm-sized ejection port, and sports no forward-assist or dust-cover. As such, no upper parts kit will be required for your build.
Weight: approx 8.5 ounces
This stripped 9mm lower is compatible with 9mm Glock magazines.
Weight: approx 12.8 ounces