This is a Sharps Bros. Stripped Lower Receiver known as the SBLR03 chambered in 223 Remington, model SBLR03.
The Jack Gen2 features now include a threaded bolt catch pin" reduced weight and improved styling - and lower costs to you.
Features:
Beveled Magazine Flare
Machined from 7075-T6 Aluminum
Oversized and Integral Trigger Guard
