Replacement barrels for the Galil ACE SAR. These were made in South Africa by Truvelo Specialised Manufacturing (Pty) Ltd. Truvelo has a long history of providing firearms and barrels to South African army and police forces, and exporting their products to government entities across the world. 
 
Profile:
armology coating on EN19 steel (chrome-moly)
chrome-lined
1:9 twist
13.1" barrel length
13x1R muzzle thread
21x1.5mm barrel thread
0.6325 gas block size
5.56x45mm Cal.
South African serial number and made-in-South-Africa proof stamp
 
Made in South Africa.