We have always wanted an affordable Personal Defense Weapon (PDW) for airsoft and the Echo 1 M4 CQB XK made our dreams come true. The M4 CQB XK is quite the compact little hellion that we %100 expect from Echo 1 USA's design team. The rotary sights allow you to easily aim it and adjust it for different ranges as well as you can remove them completely if needed to have simply a flat rail for any kind of Picatinny Weaver mounted optic. The quick detach sling adapter is a huge plus as well so get a sling for this so you can set it on your side and use it as your main or as your side arm.

Features:

• Detachable rotary sight and post
• One piece outer barrel
• Free floating monolithic style RIS/RAS fore grip
• Metal gearbox
• Metal gears
• Semi and Full-Auto
• Personal Defense Weapon Style (PDW)
• PDW Length
• Quick detach length
• Uses PEQ Battery Box
• InnerBarrel Length: 120mm
• Barrel Caliber: 6mm
• BB Capacity: 300Rounds/190Rounds
• Initial BB Speed: 350fps
• Battery Type: Battery Box (custom)
• Package Includes: Battery, Charger and 1 High Capacity Magazine.