X-Ring takes a look at two HK MR556 A4 models available for the civilian market for those who want a real steel HK416 commercially in the U.S... "In this review, we take a look at the new HK MR556 A4 in both the 16.5" and the 11" barrel length.  We will also look at the HK416 in comparison."

The 1911 Syndicate try the HK MR556 A4 rifle which they say is one of the most exciting releases in years in the civilian firearms market... "The HK MR556 is one of Heckler & Koch's most slept on guns.  For those wanting an HK 416, the reality is, an MR556 A1 conversion process was the closest thing we could get in the civilian market.  But HK has now released the MR556 A4, and we rejoice.  The MR556 A4 is, essentially, a 416 A5.