I like a light weight setup not seeing a need to have a heavy gun 6.5 pounds with a 2-7x32 vortex
free float hand guards are worth it. this gives you lots of real-estate to mount things and lets the barrel ride fully free floated for best accuracy.
they make 5, 10 , 20 , 30 and 40 round mags
for hunting I run metal 20s they stick out about an inch then 10s stick out about a half inch because you have to have some stick out to get a hold of , my dad runs the p-mag (poly) 10 rounders they work fine and you pay basically the same money 10 , 20 or 30
ambi safety is a very common upgrade
they even make a ambi bolt release now
for mags you will just have to get the release with you thumb as you pull the mag out.
Nikon P-series mounts are very nice they are 2 piece and are symmetrical so they can be run one forwards one backwards to give you a huge number of possibilities for mounting , if your into taking a scope on and off frequently they are not for you but to mount and leave they are very good. they run about 40 dollars
I have one of these in 300 blackout form brownells very strait shooter and with scope scope under 7 pounds loaded makes for easy carrying but I was just shooting it out to 400 yards 2 weeks ago so plenty capable and accurate.
https://www.brownells.com/rifle-par...lok-5-56-prod116352.aspx?sku=100-025-582this is just the complete upper , it attaches to the lower , the lower is where you add the ambi safety the 2 separate with 2 take down pins you can buy a complete lower or a stripped lower both need to go to a dealer or come from a dealer that is the serialized part
this is a brownell's upper , a vortex 2-7x32 , Nikon p-series mounts this is a Key-mod free float tube and they now come with a M-lock mount which is what you want I got ke-mod because they were clearancing them out and I don't mount much the only difference is the shape of the slot to mount accessories.