CMMG Resolute MK4 Semi-Automatic Rifle 5.56mm NATO 16" Barrel (1)-30Rd Magazine CMMG 6 Position RipStock Coyote Tan Cerakote Finish
5.56 has been the go-to caliber choice for AR 15 owners both new and seasoned. A range of loadings for 5.56x45mm and .223 Rem have made 5.56mm chambered rifles like this RESOLUTE a no brainer choice for hunting, home defense and target shooting. Features EML handguard, full length M-LOK slots on both sides and the bottom of the handguard as well as M-LOK between the top picatinny rail sections; ZEROED parts including: drop-in trigger, pistol grip, trigger guard, 60/90 degree ambi safety, ambi charging handle, ambi mag catch, extended mag release button, bolt catch, polymer dust cover and muzzle brake. Includes Magpul 30rd PMAG.
Brand: CMMG
Category: Tactical Rifles
Series: MK4
Model Resolute
Caliber 5.56x45mm NATO
Barrel Length Range 14" to 14.99"
Gun Platform AR-Style
Operating System Direct Impingement
Stock Finish Group Brown
Capacity 30+1
Stock Material Synthetic
Action Semi-Auto
Oal 30.90"
Sights None
Barrel Finish Black Nitride
Barrel Material 4140 Steel
Muzzle CMMG Zeroed Muzzle Brake
Twist 1:7"
Receiver Description Picatinny Rail
Grips CMMG Zeroed
Handguards EML 13" M-LOK
Includes Magazine
Receiver Material Aluminum
Safety CMMG Zeroed 60 / 90 Degree
Thread Pattern 1 / 2"x28
Stock Description CMMG 6 Position RipStock
Barrel Description Medium Taper Threaded
Barrel Length 14.50"
Max Capacity 30
Receiver Finish Coyote Tan Cerakote
Trigger Zeroed Drop-In Single Stage
Weight 6.20 lbs
Stock Finish Coyote Tan
Handguard Finish Coyote Tan Cerakote
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
