I've been offered a STG-556, 20" OD Green. Serial in the 9700 range, which I think is later gen 4. Has 50 rounds downrange and is otherwise new, offered by the original owner. I know the reliability can be sketchy but the Gen 4 or E4 seems to be the best.
My questions are basically;
1- Should I bother? I have seen many have success with Gen 4's
2- Do Magpul Pmags for the AUG or factory Steyr AUG mags fit the Gen 4?
3- What AUG accessories will work? Charging handle, aftermarket fore-grips or rails?
4- What does Ratworx do or offer for the gun, their website doesn't say, and most of the info I see is from years ago so I am curious what they STILL do.
5- I don't see any barrels available so does anyone know of any I'll effects of cutting and re-threading a 20" to a 16"?