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So I finally got all the parts together for my "cheap/light" build. I have assembled lowers before and stuff, but haven't installed any barrels to this point.
upper is a PSA flattop. Barrel is E.R. Shaw/Model 1 lightweight 16" CAR barrel from Midway, info says .223 chamber, reviews/feedback say .223 chamber.
BCG is "5.56 8620 with charging handle" from PSA. Not engraved with typical PSA logo so I assume it's no-name or generic brand. I don't know.
In any case, I'm having some trouble.
0. Crappy cheap Delton barrel nut sheared 3 teeth and was generally a PITA to install. That's another issue. I've learned my lesson on that one.
1. 8620 BCG closes on a Clymer .223 NO GO gauge. (1.4666"). The PSA BCG that came with my PSA mock dissy upper does NOT close on the NO GO .223 gauge in the new rifle. Both BCGs close on .223 NO GO gauge if tried in the PSA dissy upper (which has a 5.56 chamber).
So: I assume this means that my crappy 8620 BCG or bolt is out of spec, correct? OR, does it mean that in this particular combination, the chamber is actually 5.56?
I also assume that to confirm this I need to purchase a 5.56 NO GO gauge?
OR, can I assume that if the PSA dissy BCG doesn't close on a .223 NO GO gauge, it's close enough to a 5.56 chamber?
Wait, that doesn't make sense. That just means that it's a .223 chamber WITH THE PSA DISSY BCG, right?
Ugh... this has been a nightmare. 2012 was the wrong time to start buying parts and building ARs. Crappy NFA poly lower, crappy BGC, questionable (to this point) barrel...
upper is a PSA flattop. Barrel is E.R. Shaw/Model 1 lightweight 16" CAR barrel from Midway, info says .223 chamber, reviews/feedback say .223 chamber.
BCG is "5.56 8620 with charging handle" from PSA. Not engraved with typical PSA logo so I assume it's no-name or generic brand. I don't know.
In any case, I'm having some trouble.
0. Crappy cheap Delton barrel nut sheared 3 teeth and was generally a PITA to install. That's another issue. I've learned my lesson on that one.
1. 8620 BCG closes on a Clymer .223 NO GO gauge. (1.4666"). The PSA BCG that came with my PSA mock dissy upper does NOT close on the NO GO .223 gauge in the new rifle. Both BCGs close on .223 NO GO gauge if tried in the PSA dissy upper (which has a 5.56 chamber).
So: I assume this means that my crappy 8620 BCG or bolt is out of spec, correct? OR, does it mean that in this particular combination, the chamber is actually 5.56?
I also assume that to confirm this I need to purchase a 5.56 NO GO gauge?
OR, can I assume that if the PSA dissy BCG doesn't close on a .223 NO GO gauge, it's close enough to a 5.56 chamber?
Wait, that doesn't make sense. That just means that it's a .223 chamber WITH THE PSA DISSY BCG, right?
Ugh... this has been a nightmare. 2012 was the wrong time to start buying parts and building ARs. Crappy NFA poly lower, crappy BGC, questionable (to this point) barrel...