Measure yours to see how close it is to one inch. You should always have a thumb handy for a guide for measuring items under 6 inches (15cm)! In miniatures, 1 inch = roughly 1 foot in standard dollhouse scale (1:12) and it is quite close to the size used for standard 28mm gaming figures for wargaming.
The M4 carbine is a shorter and lighter variant of the M16A2 assault rifle. The M4 is a 5.56Ã45mm NATO, air-cooled, direct impingement gas-operated, magazine-fed carbine. It has a 14.5 in (370 mm) barrel and a telescoping stock.he M4 is a 5.56Ã45mm NATO, air-cooled, direct impingement gas-operated, magazine-fed carbine. It has a 14.5 in (370 mm) barrel and a telescoping stock.
The CQBR replaces the M4 with a barrel 10.3 in (262 mm) length, making it the modern equivalent of the Colt Commando short-barrel M16 variants of the past. Barrel: The CQBR uses a 1:7 in (178 mm) twist M4 barrel that has been modified in length to 10.3 in (262 mm). 2  The diameter of the barrel under the handguards is 1.17 in (29.7 mm).