Grey Feather Reobrix NO.77004 M416 Technic Model Kit, Assault Rifle, Exclusive Collection, Gift, 1188 Pieces, Balls can be loaded into the magazine, Compatible with Lego Technic: Amazon.de: Toys
Lego M4 Carbine | At heart, this used to be a Brickarms ARC.… | Flickr
Compatible with Lego Mork Firearms Series Assault Rifle M4 Machine Gun 98K Sniper Rifle Building Blocks Model Toys for Boy Gifts|Stacking Blocks| - AliExpress
LEGO M4 - YouTube
lego Colt M4A1 update by kliefox on DeviantArt
LEGO M4 Carbine - YouTube
Lego M4 Carbine | Since I built this about 1 year ago, I've … | Flickr