Adopted by NATO in 1980, the 5.56x45mm has proven itself in military and civilian applications. With muzzle velocities exceeding 3,000 fps, it delivers flat trajectories out to 500 yards. The round is available in a wide range of bullet weights from 55 to 77 grains, with popular loads including M193 (55gr FMJ) and M855 (62gr steel-core). Its low recoil makes it excellent for competition shooting and training, while heavier loads like the 77gr OTM provide enhanced accuracy for precision work.
Compatible Firearms by Brand
Top manufacturers producing firearms chambered in 5.56 nato:
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