Echo 1 USA Stag Arms Stag-15 Mod4 All-metal construction (except forearm, pistol grip & buttpad) AEG 300-rd mag Full-/semi-auto 360 fps (0.20-gram BBs) 8mm ball bearing bushings Collapsible stock Flat top with Weaver/Picatinny rail Carry handle Version 2 mechbox Sling loops Mini battery with small Tamiya connector Removable flash hider for CQB action Adjustable front (elevation) & rear (windage & elevation) sights Pistol grip with finger grooves Manual safety Long-shaft motor Adjustable Hop-Up