I have a PSA PA10 G3 that came with the old style M16A2 style handguards and front sight both of which I am replacing. From what I have been reading, the PA10 requires handguards that are "DPMS low." I found a set of handguards made by Presma that are 15" entitled "AR10 LR 308 Super Light M-LOK Series Free Float Handguards, DPMS Low Profile" (https://team15tactical.com/products/presma-ar-10-lr-308-super-light-m-lok-series-free-float-handguards-15-in-dpms-low-profile) that I think should work for my purposes. My main question pertains to what else I will need to purchase and install. The handguards come with a new barrel nut, but nothing else regarding installation parts. I am assuming I will not need to replace the gas tube, but I am not entirely sure what gas block I should use. There are several low profile gas blocks on the market in .750 including some that are fixed and others that are adjustable. PSA does not provide the specifications for their barrel, but all that I have read indicate a .750 barrel for the PA10. I would appreciate any information regarding whether or not the gas tube needs to or should be replaced as well as information concerning the appropriate gas block. Lastly, are there any advantages to having an adjustable gas block versus a fixed one? Below are a couple of links to .750 gas blocks that are sold by PSA with the first link being the gas block that comes standard with PA10's that come with their free float handguards. I primarily bought this rifle for home defense and occasional time on the range. Thanks!
https://palmettostatearmory.com/psa-custom-750-diameter-click-adjustable-gas-block-7811021.html
https://palmettostatearmory.com/psa-custom-750-diameter-adjustable-gas-block-116001.html#
https://palmettostatearmory.com/cmmg-low-profile-750-gas-block-assembly-55da38d.html