ar 15 upper question

[dustin]

Anyone know where I can find a list of the parts I would need to build a complete flattop upper for an ar15?

[Sleeper]

yep.

[Sleeper]

http://rockriverarms.com/index.cfm?fuseaction=category.display&category_id=281

[motoman]

Did you try AR15.com

[dustin]

not so ninja edit. thanks for the quick replies

[dustin]

Also, is there enough of a difference between a 1:7 barrel and a 1:9 that would warrant paying the extra money? For a gun that I plan on taking to the range, would I be shorting myself by going with the 1:9?

[Sleeper]

1/9 actually works best with most store bought ammo imho.

Either will be fine. the limiting factor with ar's and heavy bullets anyway is mag length.

[Mr_Fiux]

Also, is there enough of a difference between a 1:7 barrel and a 1:9 that would warrant paying the extra money? For a gun that I plan on taking to the range, would I be shorting myself by going with the 1:9?

If it is a plinking gun go for the 1:9 twist, if you plan on shooting heavier than 62 grain bullets I suggest you pick up a 1:7 twist to give it the necessary spin that heavier bullets demand.