Rosco Manufacturing Bloodline 5.56 AR-15 Barrel M4 Carbine - 14.5"
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Rosco Manufacturing
Overview
The Rosco Manufacturing Bloodline 5.56 AR-15 Barrel is a 14.5-inch M4 profile barrel designed for use with a carbine-length gas system. With a twist rate of 1:7, it effectively stabilizes a wide range of bullet weights, making it versatile for different ammunition choices. This barrel is commonly found in builds that emphasize a compact design while maintaining the reliability and performance expected from a 5.56 NATO caliber setup.
Specifications
Rosco Manufacturing Bloodline 5.56 AR-15 Barrel M4 Carbine - 14.5"
Available Merchants(8)
Prices checked
Price Alert
October 2026 so far on GunPartPicker
Rosco Manufacturing Bloodline 5.56 AR-15 Barrel M4 Carbine - 14.5" is the sixth most added barrel on GunPartPicker so far in October 2026, behind the Wilson Combat Recon Barrel 5.56 18 Fluted Rifle Gas Stainless 1-8, with about 2% of all barrels added to builds. Down from #4 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.
It was hard to find in September 2026, in stock on only 16 of the 27 days we checked, and today 7 of the 8 retailers we track have it in stock. Prices barely moved in September 2026, holding around $137.50, so there haven't been real sales lately. Buying today, the lowest price is $131.49 at Ammunition Depot, 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
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Midwest Industries Suppressor Series M-LOK AR-15 Handguard - 10.5"
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Geissele Automatics AR-15 SSA-E X Lightning Bow Trigger
Build Configuration Breakdown
Aggregated and anonymized data showing how builders use this product
PlatformBased on real build data showing which platform (AR-15, AR-10, AR-9) builders pair with this product.
Builds Featuring This Part
See all 91 →Builds in the community that include the Rosco Manufacturing Bloodline 5.56 Ar-15 Barrel M4 Carbine - 14.5"
| Build | Parts | Total |
|---|---|---|
 | 23 | $3989.84 |
 | 16 | $4618.78 |
 | 17 | $1450.08 |
 | 11 | $1115.10 |
 | 14 | $2254.46 |
 | 22 | $1026.53 |
| 8 | $674.93 |
 | 22 | $1002.77 |
| 10 | $751.59 |
| 28 | $2734.19 |
 | 14 | $4939.83 |
 | 12 | $2317.82 |
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