The Shark Coast Tactical Liberty AR Patina is a 16-inch AR-15 style semi-automatic rifle chambered in 5.56 NATO, built around a 4150 CMV Melonite barrel with a 1/7 twist and M4 feed ramps. It runs a carbine gas system with a low-profile gas block and an M16 bolt carrier group, and it ships with a 15-inch MLOK handguard and a distressed Cerakote finish. 
 

Key Specifications 

• Brand: Shark Coast Tactical 
• Model: Liberty AR Patina 
• Caliber: 5.56 NATO 
• Action: Semi Auto 
• Capacity: 30+1 
• Barrel Length: 16 inches 
• Finish: Distressed Cerakote (Patina) 
   

Detailed Features 

• 4150 CMV Melonite barrel with a 1/7 twist for common 5.56 NATO loads 
• Carbine gas system with a low-profile gas block for cycling 
• M16 bolt carrier group and M4 feed ramps for an AR-pattern feeding setup 
• 15-inch MLOK handguard for accessory mounting 
• A2 flash hider on a 1/2-28 threaded muzzle for muzzle device compatibility 
• Magpul SL-K stock and Magpul MOE grip for an adjustable carbine feel

The Liberty AR Patina appeals to owners who want a distressed, worn-in look without waiting years for actual wear to happen. Feedback on the Cerakote patina finish is largely positive since it hides scratches well, though a few owners feel the look is more subtle than photos suggest. Reliability with a carbine gas system and M16 bolt carrier group is generally solid once the rifle has a proper break-in period.

Ergonomically, the Magpul SL-K stock and MOE grip give the rifle a familiar, adjustable feel that most AR-15 shooters settle into quickly. The MLOK handguard gives enough real estate for lights, slings, and grips without feeling bulky.

Value opinions vary: some buyers like the barrel steel and threaded muzzle setup for the price, while others expected more included accessories. The AR-15 platform keeps the aftermarket wide open for stocks, optics, and triggers.