Saw someone post their Lego AR57 (FSS Hurricane) So here's my MW19 and MW22 m4s. Working Bolt and mag release and are part of a modular M4 receiver I designed allowing for
M4-TAC Rifle (Tactical Assault Carbine) - LEGO Compatible – The Brick Show Shop
Lego Spec Weapons M4 With Optic Lot Of 15 Custom Brick Weapons BLACK, Lego Guns | eBay
Custom M4 Rifle Variants for Minifigures -Pick Color!- NEW Brick Troops Leyile | eBay