TFB Review: Heckler & Koch MR556 A4 Rifle

Summary

This review covers the Heckler & Koch MR556 A4 rifle, highlighting its short-stroke piston system, ambidextrous controls, and match-grade cold hammer forged barrel. The 5.56 NATO/.223 Rem rifle, with a 16.5-inch barrel and 4.75 lb trigger, achieved an average 0.86-inch group at 100 yards with SIG Sauer 77gr Match ammo. It retails for an MSRP of $3,999.99 and is praised for its exceptional reliability and accuracy.