Sons of Liberty Gun Works M4-L89 Semi-Automatic Rifle 5.56NATO 16" Barrel (1)-30Rd Magazine Black Finish
The M4-L89 is the premier fighting rifle. It houses our combat grade barrel, A5 buffer system, Liberty Fighting Trigger, Ambi Liberty Charging Handle, ambi Quick Selector and B5 furniture.
Brand: Sons Of Liberty Gun Works
Category: Tactical Rifles
Model: M4-L89
Caliber: 5.56mm
Barrel Length Range: 16" to 16.99"
Operating System: Gas
Stock Finish Group: Black
Capacity: 30+1
Action: Semi-Auto
Hand: Ambidextrous
Barrel Finish: Black QPQ
Barrel Material: 4150 Chrome Moly Steel
Muzzle: A2 Flash Hider
Twist: 1:7"
Barrel Description: Button Rifled
Max Capacity: 30
Receiver Finish: Black Hardcoat Anodize
Trigger: Liberty Fighting Trigger
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
