This time this custom gun made by eHobby Asia is based on King Arms, not G&P and kitted with some nice goodies from Magpul PTS that may take your fancy. It has a functional bolt lock system with the King Arms M4A1 full metal M4 carbine with colt markings. It is kitted with the Magpul PTS UBR stock, and MOE front kit, MBUS rear sight, trigger guard, Hi-cap magazine, and it is in the dark earth colour. Good pricing for a custom work like this for US$350.

"King Arms M4A1 AEG Features:

• EAC Custom Works base on King Arms Colt M4A1 AEG (KA-AG-20)
• Custom Work to ensure smooth shooting operation
• Full Metal Construction
• Official licensed Colt M4A1 marking from CYBER GUN
• 7mm Bearing Metal Gearbox
• 10.5" outer barrel
• Bolt Catch system which holds the bolt open

MAGPUL PTS Custom Upgrade Works:

• MAGPUL PTS UBR Stock - DuPont™ Polymer Made. Collapsable while still offering stability of a fixed stock. Front / Rear ambidextrous QD sling sockets.
• MAGPUL PTS Pistol Grip with heat sink end cap (MAGPUL-032) - Improved Ergonomics and Non-Slip Rough Texture on both sides and rear backstrap
• MAGPUL PTS MOE Handguard (MAGPUL-036) - Fit up to 9.6V Rechargeable Battery
• Magpul PTS Back-Up Rear Sight (MBUS) - Spring Loaded Flip-Up system, release lever can be reached on left, right & top position
• MAGPUL PTS MOE Polymer Trigger Guard (MAGPUL-064) - Shallow V Shape best use of gloves
• King Arms 360rd PMAG (KA-MAG-42-HC-BK) - First and only Licensed High Capacity MAGPUL Airsoft PMAG™"