Used PSA/FN 16" Hammer-forged Chrome-lined, M4A1 MP barrel SOCOM Profile
Barrel length 16"
Hammer Forged Barrel
Machine Gun Steel
Extra thick hrocme-lined bore and chamber
5.56 Nato Chamber
1 in 7" twist
500 rounds through it. Great barrel. Has two dimples in it to properly install a low profile gas block so the screws dont come loose.
$190 shipped SPF