i picked up 6 last year.
very ruff guns, very shotty Q/C on them.
but for the price what can you expect.
i invested a couple hours over a long winter night cleaning them up and they all run flawless.
i kept 2 for my kids and my dad and co workers all took the others.
so far no one has any complaints about theirs guns.
as for the stock, there was a fella on here to stripped his stock down and re did it with a sweet looking green stain, looked super good.
as for differences they are all mentioned above.
for you guys that picked up the RIA here is what my co-workser, dad and myself did with the 6 we picked up.
just after market stocks, optics and bolt release mod's and polishing all the insides.
(all the wood stocks below are Ruger stocks not RIA stocks)
(Boyd Blaster stock)
(top one below is a Dlask)
(top gun bellow is a 1984 Ruger, bottom stock is a Butler Creek folding stock)