PSA New "Freedom" Upper

[mcordell]

These appear to fall between the cheap PTAC uppers and the Premium Uppers

Priced at $239

http://palmettostatearmory.com/index.php/psa-16-m4-1-7-freedom-upper-without-bcg-or-charging-handle.html Edited April 9, 2014 by mcordell

[RC3]

These appear to fall between the cheap PTAC uppers and the Premium Uppers

Priced at $239

http://palmettostatearmory.com/index.php/psa-16-m4-1-7-freedom-upper-without-bcg-or-charging-handle.html

If anyone has a cheap lower laying around, I may just get this..... But four ar's seem  a little bit much at the moment tho. Oh, and if anyone buys this, their lower must say "MERICA" Oh, and its a chrome lined barrel. So what is the biggest difference between this and regular and ptac one?

Edited April 9, 2014 by RC3

[mcordell]

Well the freedom line isn't chrome lined they are chrome moly .... I can't really find much info on the PTAC barrels other than they are 4140 steel, have a 5.56 chamber and are 1/7 twist

Possibly better QC etc Edited April 9, 2014 by mcordell

[Stegall Law Firm]

What is the difference between chrome moly and chrome lined?  Today I ordered a blemished PSA upper with a cmv barrel and a cl bore.

 

Actually I looked again and it's a cl-cmv barrel.  So it's both?

Edited April 10, 2014 by Stegall Law Firm

[Clod Stomper]

Chrome molybdenum is the composition of the barrel steel itself.

Chrome lining is a relatively thin layer of hard chrome inside the chamber and bore of the barrel that is much more durable than steel.

So, yes, it can be both. Edited April 10, 2014 by Clod Stomper

[Guest semiautots]

Chrome lined lasts longer. Chrome moly is supposed to be more accurate.