H & K MR556 A4

Heckler & Koch, MR556 A4, Semi-automatic, AR, 223 Remington/556NATO, 16.5" Barrel, Anodized Finish, Black, M-LOK Free Float Handguard, Adjustable Gas Block, HK USA Enhanced Grip, HK416 Six Position Stock, Ambidextrous Controls, 30 Rounds, 1 Magazine
Warning
HK416 elongated steel castle nut
HK416 A5 upper receiver
Continuous picatinny rail interface between upper receiver and handguard
M-LOK interface with integral ambi QD cups
Suppressor-ready concentric 1/2X28 threads
Match rifle cold-hammer-forged barrel
Ambidextrous safety lever, bolt release and magazine release
Ambi safety selector with 45-degree throw
Updated angled magazine well for reliable feeding
HK416 2-position adjustable gas block
Ambidextrous QD end plate