Out of stock
PSA 20" CHF Rifle-length 5.56 NATO 1/7 A2 Nitride Barrel M4 Ext - 516444711
Out of stock

PSA 20" CHF Rifle-length 5.56 NATO 1/7 A2 Nitride Barrel M4 Ext - 516444711

SKU 516444711
Brand Palmetto State Armory
Model Number 516444711
UPC 516444711
Customers must read Compliance Information before purchasing.

Product Details


Caliber: 5.56 NATO
Barrel Length: 20"
Twist Rate: 1:7"
Barrel Steel: 4150V Chrome Moly Vanadium (Cold Hammer Forged)
Barrel Finish: Nitride
Gas System: Rifle Length Direct Gas Impingement
Barrel Profile: A2 Profile
Barrel Extension: M4
Diameter at Gas Port: .750
Weight: 14.2 oz
Roll Mark: "5.56 NATO 1/7 CHF PSA"
*Proudly Made in the USA*


PSA 20" CHF Rifle-Length A2 Nitride Barrel - 516444711

20" Barrel Length

4150V Chrome Moly Steel 

Rifle-Length Gas System

A2 Profile (uses .750 diameter gas block)

5.56 NATO Chamber

1 in 7" Barrel Twist

Nitride Barrel Finish

M4 Barrel Extension

Made in the USA

Roll mark "5.56 NATO 1/7 CHF PSA"  


Q & A


All NFA Rules Apply.
These items are controlled by the U.S. Government and authorized for export only to the country of ultimate destination for use by the ultimate consignee or end-user(s) herein identified. They may not be resold, transferred, or otherwise disposed of, to any other country or to any person other than the authorized ultimate consignee or end-user(s), either in their original form or after being incorporated into other items, without first obtaining approval from the U.S. government or as otherwise authorized by U.S. law and regulations.
Handling firearms or firearms parts can expose you to lead and other petroleum products known to the State of California to cause cancer, birth defects, or other reproductive harm. Wash hands thoroughly after handling. For more information go to www.p65warnings.ca.gov (CA Health and Safety Code Section 25249.6).