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This 16-inch HBAR barrel from Ballistic Advantage is a solid pick for anyone putting together a 5.56 AR-15 that needs to hold up to regular use without a lot of babysitting. It's machined from 4150 Chrome Moly Vanadium steel, chambered in 5.56 NATO so it also runs .223 Remington without a hitch, and the heavy HBAR contour adds a bit of forward weight that helps steady the rifle out at longer distances.
The bore and chamber are chrome lined rather than just nitride treated, which is worth knowing because chrome lining has been the go-to choice for decades when a barrel needs to shrug off heat, moisture, and heavy use. It cleans up easier than a bare steel bore and tends to keep performing well even after thousands of rounds. The exterior gets a manganese phosphate finish, giving it that classic parkerized look and an extra layer of corrosion resistance that plenty of builders still prefer over newer coatings.
Running a mid-length gas system on a 16-inch barrel is a popular combo because it softens recoil impulse compared to a standard carbine-length setup, which means less muzzle bounce between shots and a little less wear on your bolt carrier group over time. The M4 feed ramp extension is phosphate coated to match the rest of the barrel and helps rounds feed cleanly from the mag into the chamber, especially useful if you're running a mix of ammo types. The 1:7 twist rate stabilizes a wide range of bullet weights, so you're not locked into one specific load.
On the business end, you get standard 1/2×28 threading, which opens the barrel up to just about any muzzle brake, flash hider, or suppressor mount built for 5.56. The .750" gas block journal is the industry standard size, so finding a compatible low-profile gas block won't be a scavenger hunt. Ballistic Advantage machines these in-house in the US and backs them with a manufacturer warranty, so you're getting a barrel from a company that's been doing this for a while and knows what builders actually want out of a mid-weight 16-inch upper.
Yes, since it comes with an M4 feed ramp extension you'll want to pair it with a mil-spec M4 cut upper receiver. Nearly every modern AR-15 upper on the market today has the M4 cuts, so this shouldn't be an issue for most builds. Mismatching an M4 extension with a non-M4 upper can cause feeding problems, so it's worth double checking before you assemble everything.
This barrel uses a standard .750 inch gas block journal and a mid-length gas system, so you'll need a .750 low-profile gas block and a mid-length gas tube to match. Most standard AR-15 gas blocks and tubes in this size will fit correctly.
Chrome lining has been trusted in military and civilian rifles for a long time because it holds up well to heat and heavy round counts while making the bore easier to clean. Nitride finishes are great too, but chrome lining tends to be the choice for people who want a barrel built to run hard for years without much fuss.
The standard 1/2×28 threading on this barrel accepts the vast majority of muzzle devices and suppressor mounts made for 5.56 platforms. The chrome lined bore also handles the extra heat that comes with suppressed shooting better than a lot of other finishes, which makes it a reasonable pick if suppressor use is part of your plan.
| UPC | 819747020291 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | BABL556017MC |
| Barrel Length | 16" |
| Caliber/Gauge | .223 REM/5.56 NATO |
| Color | Black |
| Length | 16'' |
| Model | |
| Product Type | Barrel |
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