Barrel Lug: Uncertain
Battle Sight on RSL: D
Bayonet Type: Spike
Bayonet Lug: Uncertain
Bolt Carrier: Late Non-Cut
Gas Tube: Uncertain
Gas Block: Uncertain
Receiver Cover Takedown: Normal
Rear Sight Block: Uncertain
Serial Number Format: X Digits, 1617138
S/N on Components: Last X digits/Uncertain
S/N on Stock: Uncertain
Stock Swivel: Uncertain
Trigger Group Type: Late Stamped