Ballistic Advantage AR-15 Modern Series 12.5 Carbine Barrel Gov't
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Ballistic Advantage
Overview
The Ballistic Advantage AR-15 Modern Series 12.5 Carbine Barrel is a compact option designed for 5.56 NATO caliber rifles, featuring a Government profile that balances weight and rigidity. With a 1:7 twist rate, this barrel effectively stabilizes a wide range of bullet weights, while the .750 gas block diameter and carbine-length gas system ensure reliable cycling. This barrel is often found in builds that prioritize maneuverability and versatility, making it suitable for both tactical applications and close-quarters engagements.
Specifications
Ballistic Advantage AR-15 Modern Series 12.5 Carbine Barrel Gov't
Available Merchants(12)
Prices checked
Price Alert
October 2026 so far on GunPartPicker
Ballistic Advantage AR-15 Modern Series 12.5 Carbine Barrel Gov't is the fourth most added barrel on GunPartPicker so far in October 2026, behind the FAXON Firearms 16" 223 Wylde Match Barrel Stainless Steel Black, with about 4% of all barrels added to builds. Up from #5 in September. Builds with this barrel are nearly all chambered in 5.56 NATO, nearly all on carbine-length gas, and nearly all AR-15.
Availability is good: it was in stock at one retailer or another nearly every day in September 2026, but today 5 of the 12 retailers we track have it in stock. The best price crept up from $93.12 to $114 over September 2026. Buying today, the lowest price is $93.12 at Optics Planet, which matches the best price we saw in September.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
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Frequently Built With
The part most often added in each category by hundreds of builds that include this one
Bravo Company Mfg Upper Receiver Assembly w/ Laser T-Markings, Hard Coated Anodized - 4-UR-M4
Wilson Combat AR-15 Lower Receiver Forged
Midwest Industries Suppressor Series M-LOK AR-15 Handguard - 10.5"
Breek Arms AR-15 Warhammer MOD2 Ambidextrous Charging Handle Black
PSA AR-15 Bolt Carrier Group 5.56 Full-Auto Nitride MPI - 516446953
Geissele Automatics AR-15 SSA-E X Lightning Bow Trigger
Builds Featuring This Part
See all builds →Builds in the community that include the Ballistic Advantage Ar-15 Modern Series 12.5 Carbine Barrel Gov't
| Build | Parts | Total |
|---|---|---|
 | 24 | $937.34 |
 | 19 | $3705.82 |
 | 27 | $3987.45 |
 | 7 | $1848.99 |
 | 11 | $1016.64 |
 | 25 | $2158.84 |
 | 20 | $982.82 |
| 6 | $832.42 |
| 6 | $881.25 |
| 15 | $6755.13 |
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