Ballistic Advantage Modern Series Barrel 9mm 5.5 inch Straight 1-10 Twist Black
$99.75 at OpticsPlanet · 3 stores
In stock Sale
Best price
$83.99at Brownells
In stock Sale Lowest in 30 dayschecked Nov 13, 2026
Fits and works with
- Caliber
- 9mm · Shop matching ammo
- Bolt
- 9mm · Bolt carrier groups
- Muzzle thread
- 1/2x28 · Muzzle devices
Specifications
- Manufacturer
- Ballistic Advantage
- Color
- Black
- Platform
- AR-9
- Caliber
- 9mm
- Twist rate
- 1:10
- Thread pattern
- ½ x 28
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| Brownells Best price 17.76% off · ends Nov 15 · exclusions apply | $83.99Salechecked Nov 13, 2026 | In stock | Buy at Brownells | |
| Battlehawk Armory | $77.27Salechecked Oct 12, 2026 | Check store | Buy at Battlehawk Armory | |
| AR15Discounts 5% off | $89.95checked Nov 12, 2026 | Check store | Buy at AR15Discounts | |
| Dirty Bird | $89.95checked Nov 12, 2026 | Check store | Buy at Dirty Bird | |
| Palmetto State Armory | $93.99checked Oct 10, 2026 | Check store | Buy at Palmetto State Armory | |
| GrabAGun | $99.75checked Nov 12, 2026 | Check store | Buy at GrabAGun | |
| OpticsPlanet | $99.75Salechecked Nov 12, 2026 | Out of stock | Buy at OpticsPlanet | |
| Ammunition Depot | $99.75checked Oct 11, 2026 | Out of stock | Buy at Ammunition Depot |
Prices and availability change often, so confirm on the store's site before you buy. We may earn a commission from these links.
Price history
Lowest in-stock price in the last 30 days: $83.99 at Brownells. Dashed line = out of stock. Tracking since Sep 27, 2026.
Show the prices as a table
| Store | Latest | Lowest | Highest |
|---|---|---|---|
| AR15Discounts | $89.95 | $89.95 | $89.95 |
| Ammunition Depot | — | $99.75 | $99.75 |
| Battlehawk Armory | — | $73.73 | $77.27 |
| Brownells | $83.99 | $83.99 | $83.99 |
| Dirty Bird | $89.95 | $89.95 | $89.95 |
| GrabAGun | $99.75 | $99.75 | $99.75 |
| OpticsPlanet | $99.75 | $94.76 | $99.75 |
| Palmetto State Armory | — | $93.99 | $93.99 |
Since Sep 27, 2026.
About this part
The AR-15 Modern Series 5.5 Barrel is a 9mm barrel from Ballistic Advantage. It's sold by 8 stores (1 in stock), from $77.27 to $99.75. The lowest in-stock price in the last 30 days was $83.99 at Brownells.
From the manufacturer
This 9mm chambered 4.5 inch Modern Series Barrel is machined from 4150 Chrome Moly Vanadium steel with a QPQ Corrosion Resistant Finish and 1/2-28 x .400 full profile threads. Designed to work with both Colt/RR and Glock style AR builds. Compatible with standard mil-spec uppers. There are also numerous dedicated 9mm upper options that work. Requires the use of a unique magwell conversion (Colt/Rock River style) with UZI mags or a dedicated 9mm lower with Glock mags. 9mm on an AR15 platform operates by blowback and does not need a gas block or gas tube. Threaded 1/2x28 or 1/2x36 to give you greater versatility when choosing a suppressor. Integrated feed ramp and barrel ex Mfg: Ballistic Advantage
Rating
No ratings yet
Log in to rate this part.
Comments
Please log in to read and leave comments.
Similar barrels
Ballistic Advantage Modern Series Barrel 9mm 16 inch Straight 1-10 Twist Black
$147.25 at OpticsPlanet · 5 stores
In stock Sale
ODIN Works 5" 9mm Medium Profile Barrel Stainless Steel 1:10 Twist
$83.92 at Sportsman's Warehouse · 4 stores
In stock
Lead & Steel AR-9 9mm Threaded AR Barrel 5.5in Straight Blowback 1-10 Twist 1/2x36 Nitride Black
$85.99 at OpticsPlanet · 2 stores
In stock Sale
Lead & Steel AR-9 9mm Threaded AR Barrel 8.3in Straight Blowback 1-10 Twist 1/2x28 Nitride Black
$85.99 at OpticsPlanet · 2 stores
In stock Sale
FM Products Ultralight 9mm Barrel 9.8 inch 41v50 Steel 1-10 Twist 1/2x28 Thread QPQ Nitride Black
$88.99 at OpticsPlanet
In stock Sale