There is a difference between manufacturers.
but I wouldn't trust my life to it...
Hardly, all of them except the DPMS are superior in quality to the S&W. Just look at the specs and it should jump right out at you. This forum is a terrible place to ask for an opinion on an AR. Most people just don't bother doing any research and repeat what they have heard others say whether it is correct or not. Pick out any brands you are interested in and look at the specs compared to the other brands. If you look at this web page, it will give you a pretty good idea of what to look for in an AR:https://spreadsheets.google.com/pub?key=pwswheghNQsEuEhjFwPrgTA&single=true&gid=5&output=htmlPros:
- It's not a DPMS, Bushmaster, Stag, or RRA...
Not so much really. You buy a matched barrel and bolt and then you just need a $20 barrel nut wrench and a torque wrench to torgue the nut. It is actually much simpler than assembling the lower.Assembling the upper receiver group requires special tools, gun vises, headspace guages and is not a task suitable for the casual gun owner.
Again, no not really. If you buy a barrel and bolt set, the headspacing has already been done. That is the whole purpose of buying the matched set and besides, even if you mixed and matched bolt and barrel you aren't likely to "blow yourself up". There is just not that much difference from one bolt to the next, you put the barrel in, torque the barrel nut and most likely you could install whatever bolt you want, as long as it is the right caliber and the bolt closes on a chambered round. You will need a regular bench vise, a holding jig for the upper receiver and an armorers wrench for the barrel nut, all of which can be had for around $60 or so, providing you have a vise that is.You still need a gun vise and headspace guages to insure you don't blow yourself up.
Not wanting to get into an argument but, the only way you could add those parts is to replace the upper receiver since there is no place to install them on the Sport model. I will agree however that they are not needed for the average AR owners purposes.What the Sport is missing you can add for under $50. IE: Dust Cover & Forward Assist, not that you need them at the range.
it has the aweful CA compliant mag release