Aficionados of “traditional” firearms like old name brands. An AR-15 buyer has an array of more than 70 companies to choose from when they want to add a rifle of this time-tested platform to their collection. There’s a certain mystique to buying a Colt AR-15. But if you want to buy a rifle from the original company that gave the AR its namesake, ArmaLite, Inc., then purchasing an M-15 makes perfect sense.
If you are ready to add a 6.8 SPC-chambered AR-platform rifle to your collection, then ArmaLite’s addition of this caliber to its lineup is good news. On the other hand, you may be a law enforcement officer who has learned that a .22-caliber rifle is a good weapon, but it has its limitations. The special operations community has its reasons for upgrading to a larger-caliber rifle. The LE community also has learned the hard way that defeating barriers reliably, such as auto windshield glass, potentially requires more energy and bullet mass than provided by a 5.56mm NATO cartridge. Answering that call, too, ArmaLite’s M-15A4 Carbine chambered in 6.8 SPC is a good alternative when shopping for a duty carbine.
Built on the same platform as the ArmaLite M-15A4 Carbine, the company started shipping their first rifles in 6.8 SPC only recently. To get the highest performance possible from this cartridge, ArmaLite has chosen to chamber their rifles in the Spec II configuration.
The 6.8mm Remington SPC was designed to increase performance in short-barreled CQB rifles after diminished performance from the 5.56mm NATO when the M16 was changed from the rifle configuration to the current M4 Carbine. The 6.8 SPC delivers 44 percent more energy than the 5.56mm NATO cartridge in the M4 configuration out to 300 meters.