This is a Sharps Bros. Stripped Lower Receiver known as the SBLR07 chambered in 223 Remington, model SBLR07.
This" my friends" is Overthrow. An open mag well helmet design" with battle worn dents" sword gashes and crack lines. Leave it anodized black" give it a Spartan style" a Viking theme ... the customization opportunities with this one are endless.
Features:
Stripped AR15 receiver, includes threaded bolt catch pin. Marked Caliber MULTI. Black anodized finish. CNC machined from billet 7075-T6 aluminum