Neither of mine were listed within Faxon. Believe they were listed within specs / descript at JoeBob's.
Here's the 16":
https://www.joeboboutfitters.com/Fa...com-5-56-Mid-Length-415-p/fax-15a58m16nsq.htm
Here's the 10.5" @ Brownell's:
https://www.brownells.com/rifle-par...ar-15-5-56-gov-t-socom-barrels-prod95983.aspx
Other store:
- Barrel Material: 4150 CMV Steel
- Barrel Type: Button Rifled
- Barrel Caliber: 5.56 NATO
- Barrel Twist: 1:8
- Barrel Length: 10.5"
- Barrel Profile: Light
- Barrel Gas System: Carbine
- Inside Finish: QPQ Nitride
- Outside Finish: QPQ Nitride
- Muzzle Thread: 1/2-28 TPI (Threads Per Inch
- Gas Block Diameter: .750"
- Gas Hole Diameter: .080"
- Gas Block Journal Length: 1.1"
- Barrel Extension: M4
- Weight: 1.10 lbs
- Magnetic Particle Inspected!
- 11-degree Target Crown
I'm no expert but I'll defer to believing Faxon knows how to build barrels. I believe in many instances folks get carried away with internet data. Kind of like carburetors. Most work just fine for their intended purpose: Combustion, smooth running, longevity, economy, etc. I have rejetted, changed springs, reset floats and more for drag racing, sports car racing, 4-wheeling in hilly terrain, etc. Tweaking can be performed on about anything for a specific purpose but for general use, factory is normally just fine.
Speaking of: I have a 8.5" PSA pistol. By the time I finished reading about everything that expressed / implied it wouldn't work without this, that, and the other, I about didn't want to fire it. Worked great with an A2 flash hider (came with it). I used the carbine buffer it came with, an H buffer, H2, H3 and a little stronger spring (JP). I could tell no difference firing it other than a slight difference in angle and distance of tossing the brass. I currently have the H3 in it for no particular reason. Anyhow, hope I don't eat crow on the 10.5" in a couple of days. But I have plenty of Texas Pete's extra hot, hot sauce if need.
In closing, I do appreciate everyone's experiences and opinions.