M4A1 SB with Attached M203 minifigure compatible gun toy brick weapon
Domani Gun Building Kit, 1388+ Pieces Manually Loaded Shooting Blaster Model Kit, Military M4A4 Sniper Rifle Weapon Building Block Compatible with Lego Technic, 73 x 28.7CM, 4707TIF1P1474
lego Colt M4A1 update by kliefox on DeviantArt
m4a1" 3D Models to Print - yeggi
COBI Historical Collection World War II Sherman M4A1 Tank Model Building Block Set # 2715 - Walmart.com