Design: M140 spring or greater

providing excellent performance right out of the box

Pre-installed AEG rotary hop-up

sights and magnifiers

Sights included: Lic

Helios Knight's Armament Licensed SR-16E Mod2 Airsoft AEG Rifle CQB / Black Foam Darts Design: M140 spring or greaterFeatures Fully licensed by Knight's Armament Company; Authentic licensed Knight's Armament trademarks on both sides of the receiver, true to its real rifle counterpart High strength Fiber Reinforced Nylon Polymer receiver is lightweight, yet extremely durable. The price may be affordable, but the parts certainly don't feel cheap URX4 MLOK front handguard is great for all MLOK accessories Ambidextrous magazine release, selector switch, and mock bolt