Dolt needs help thinking it through here:

1) There are 3 patterns of 308 upper receivers: Knights Armament SR-25, Armalite, DPMS.

a)The DPMS comes high and low. ARG.

b) The most popular current pattern today is??? DPMS high?

2) The buffer tube, gas-port, adjustable gas block balancing act is where the 308 build gets pricey and in need of learning from other's mistakes. Right?
a) Get syrac linear adjustable gas block, (gen 2)
b) Get heavy buffer and compatible spring

3) Most brands of stripped upper receivers and lowers are OUT OF STOCK. So you might as well GIVE UP NOW! HA!

4) What pattern is the PSA 308 upper?

For starts...

Thanks!

Links appreciated mucho.

I guess these fellows are on the right track:
https://thearmsguide.com/8736/building-308-ar-rifle-works-compatibility-explained/

https://thearmsguide.com/8738/building-308-ar-carbine-works-carbine-compatibility-engineering/

https://docs.google.com/spreadsheet...0rW47o2PYbGiJM/pub?hl=en&output=html

I tried to cut and paste the compatability chart but it did not post cleanly and readable.

Last edited by Robert_White; 07/20/16.
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