- The Trooper M4 is the ideal platform for your next advanced MSR build
Specifications
Caliber: 5.56x45mm
Capacity 30 + 1
Upper Rec. Material: 7075-T6 Aluminum
Upper Rec. Finish: Black Hardcoat Anodized
Lower Rec. Material: 7075-T6 Aluminum
Lower Rec. Finish: Black Hardcoat Anodized
Barrel Material: 4150 CMV
Front Sight: None Included
Barrel Finish: Manganese Phosphate
Rear Sight: None Included
Barrel Technical: 1:7RH, 6 Groove, Chrome Lined
Fire Mode: Semi-Automatic
Barrel Length: 16.1 in.
Trigger Type: Single Stage
Overall Length: 32-35.5 in. (81-90cm)
Grip: Government A2 Grip
Unloaded Weight: 6.5lbs
Operating System: Direct Gas Impingement, Carbine
Safeties: Reversible Safety Selector
Included Accessories: 30rd Magpul® PMAG® Magazine, Manual, Cable Lock
Caliber Dictionary
The Below Information Has Been Provided From Our Gun Caliber Dictionary And Is Meant For Informational Purposes Only. It Is Not Intended to Describe The Unique Specifications For This Ammunition.
The 5.56X45mm NATO cartridge was designed by James Sullivan, a member of Eugene Stoner's engineering team that developed both the M16 rifle and its original cartridge. The 5.56X45mm NATO was adopted by the U.S. military in 1964 and by NATO in 1980. With bullet diameter of .224-inch, the original M193 military cartridge used a 55-grain bullet at 3250 fps; the current M855A1 cartridge, developed by FN, uses a 62.5-grain bullet at 3020 fps, offering greater range and better penetration. The civilian version of the 5.56X45mm is 223 Remington; the cartridges are dimensionally identical but military chamber dimensions and specifications for military brass are different. It is considered safe to use 223 Remington ammo in a 5.56X45MM NATO chamber, but not a good idea to use 5.56X45mm ammo in a rifle specifically chambered for the 223 Remington. Although the stopping power of .22-caliber bullets remains controversial the 5.56X45mm has served well in now multiple generations of M16 rifles. — Craig Boddington
