The .410 ARQ upper allows any AR15 to be converted to a .410 shotgun. The .410 ARQ features an 18 1/2 inch barrel chambered in 2 1/2 inch .410 gauge. It also includes a carry handle with rear sight (not shown in picture), and is supplied with a 5 round polymer magazine. It is also available with an Anderson AR15 Lower.
.410 gauge 2 1/2 inch
18 1/2 inch long barrel
4 pounds (upper)
5 round magazine
See the IFC .410 ARQ In Action:
Disassembly – Assembly of the .410 ARQ (quad rail version):