Global Arms

I am trying to get input on the best trigger guard conversion and pistol grip attachment. I have experience riviting and prefer it over screws. I would like for it to look and be well made. Not to worried about price, looking for quality at a fair price.

I shot my new Saiga today for the first time. Unmodified straight out of the box. I looked and I only have one gas port. I shot some low brass old cheap leftover dove hunting rounds. Factory 5 round mag ran flawless. I am going to tear it down and convert in the next day or two. I am sending out the bolt and carrier to be polished, during this time I will mover fire controll. Do I need to drill more gas ports? Thanks for the hlep