<p>ARES DEFENSE ARES-15 MCR™ BELT-FEED UPPER ASSEMBLY •Handguard: MIL-STD 1913 Rail-Interface System •Black anodized forged 7075-T6 aluminum M1913 flat-top receiver •Proprietary side charging upper receiver system Belt-feed module installed •Nitride finished feed tray •Quick-change (3 sec) barrel system heavy profile •A2 flash hider •Adjustable Sights: A2 front sight post (elevation adj.) & rail mounted rear peep sight (windage adj.) •Carbine-length handguard w/Picati</p>