Flanked by USGI M16 magazines (left and right), the 25 and 15-round PRI magazines (center) are made of steel and have narrow ribs to accommodate the larger diameter of 6.8 SPC.
For police departments, 6.8 SPC provides substantially more "stopping power" per good hit than 5.56, reducing the number of rounds required to end the fight. This is an important consideration when each errant round is a legal liability. It also offers much better intermediate barrier penetration than 5.56, which allows an officer to shoot through glass, car doors, and other light cover. One potential downside in a law-enforcement "entry" scenario is that 6.8 SPC will penetrate more interior walls than 5.56, which might put building occupants in adjacent rooms at increased risk. With its sub-minute accuracy and superior terminal performance even from short barrels, an officer can use the same platform for entry, sniper, over-watch and patrol.
The shooter uses his Kifaru Express pack in an improvised prone position, to make hits on silhouette targets out to 600 yards sighting through the 3.5x Trijicon ACOG.
AR-15 uppers and complete rifles are available from many sources. Barrett was first to announce a complete 6.8 SPC rifle, while PRI was offering complete uppers. Model 1 Sales, DPMS, Ameetec, Olympic Arms and Stag Arms followed. Custom uppers are available from low-volume, high-quality (and high price) vendors like MSTN and Noveske Rifleworks. Remington has a version of its bolt-action Light Tactical Rifle (LTR) in 6.8 SPC, Browning offers its A-Bolt and Thompson/Center has 6.8 SPC barrels available for their G2 Contender and Encore.