Sig Sauer MCX-R Regulator Semi-Automatic Rifle 5.56mm NATO 16" Barrel (1)-10Rd Magazine Magpul SGA590 Stock Cotote Tan Cerakote Finish
The SIG MCX-R Regulator is the newest member of Sig's MCX family. Equipped with an Aluminum frame, it is finished in Gen2 NiR FDE Cerakote. Additional features include a 16 inch, cold hammer forged carbon steel barrel, a Magpul SGA Stock and fully ambidextrous Mag Release, Safety Selector and Bolt Catch. Sig offers this new MCX-R Regulator Rifle in 5.56NATO. A SIG designed 2-port Compensating Muzzle Brake on the 5.56 models is accompanied by a Receiver Integrated ARCA Rail, with a lower receiver that is compatible with all MCX Uppers.
Features : -Fully Ambidextrous Mag Release, Safety Selector, and Bolt Catch
-SIG Designed 2-Port Compensating Muzzle Brake
-Proprietary SIG 2-Stage Match Trigger
-Receiver Integrated ARCA Rail
-Magpul SGA590 Stock
-Lower Receiver Compatible with All MCX Upper Receivers
Manufacturer: Sig Sauer
Model: MCX-R REGULATOR
Action: Semi-automatic
Type: AR
Caliber: 556NATO
Barrel Length: 16"
Color: Coyote
Accessories: 1 Mag
Type of Barrel: Cold Hammer Forged
Capacity: 10 Rounds
Subcategory: Modern Sporting Rifles
Finish: Cerakote
Stock: Magpul
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
