18 416 SST Barrel – 15.5 M-LOK Handguard – Butcher Muzzle Brake – .750 Superlative Arms Adjustable Gas Block – Rifle-Length Gas System – High Pressure Nickel Boron BCG – CMC 3.5lb Single-Stage Flat Trigger – Billet Upper/Lower Receiver – Magpul ACS Adjustable Stock – Ergo Suregrip
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HK 81000828 MR556 A4 5.56x45mm 10+1 16.50″ Black Threaded Barrel, Black Picatinny Rail, M-LOK Handguard, 6 Position Black Synthetic Stock, Ambidextrous
$3,749.00
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