That 'AK' in question was the Dutch MN-1 which did the SARP trails. Its was a Dutch manufactured Galil rifle. Although I have never seen a Dutch made Galil, I have seen the South African version in SA (LM4), shot the Israeli 5.56mm and 7.62mm versions, and the Finnish M62 also.
At the end of the day, the Galil is just a 5.56mm AK with a few mods. Early Galil prototypes were built on Finnish Valmet recievers.
As for the Diemaco C7, the M16 FOW have been in service for almost 40 yrs and been around since the 1950s. Problems in the Viet Nam era were propelleant related. Now all these years later the M16 FOW is the only true combat proven rifle in 5.56mm. Its bugs are worked out, and it can only get better with upgrades and different versions. I am fully confident to carry any version of this weapon anywhere.
M16A1s still in service in Australia are all pre 1970 purchase/lend lease. Sure the finish is worn, some even the serial numbers are hard to read, but after being around with the ADF since the mid 1960s, they are like an old Timex, which keep on ticking.
Many Colt A1's, GM A1's and early marked XM16E1s and AR15s (some 5 number digits and with out the ridge around the mag release) are still around, some still with the pre 1968 butts, 3 pronged flash suppressors, and chrome carriers and bolts. All however have A1 uppers with the fwd assist 'tear drop' type.
However as time draws on, these 4500 rifles will adventually meet the smelter, with some kept for historical/heritage purposes.
The new family of the 7.62mm SR25, M4's of Bushmaster and Colt manufacture are now common in SF units, but the rest of us are stuck with the ADI locally made F88 FOW for now.
Cheers,
Wes