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Rosco Manufacturing
Overview
The Rosco Bloodline AR-15 16" barrel is a versatile option designed for 5.56 NATO builds, featuring a carbine-length gas system that promotes reliable cycling and performance. With a 1:7 twist rate, this barrel effectively stabilizes heavier projectiles, making it suitable for a variety of ammunition types. This barrel is commonly found in builds focused on tactical applications and general-purpose use, where dependability and accuracy are paramount.
Rosco Bloodline AR-15 16" 556 Barrel, 1:7 Twist - BL16M45567C
Prices checked
Rosco Bloodline AR-15 16" 556 Barrel, 1:7 Twist - BL16M45567C was the eighth most added barrel on GunPartPicker in October 2026, behind the Ballistic Advantage Performance Series 5.56 Hanson Mid-Length 3 Gun AR-15 Barrel With Pinned Gas Block - 17.7", with about 2% of all barrels added to builds. Down from #7 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 in stock most times we checked in October 2026, but today only Primary Arms has it in stock. It dipped to $152.10 at AT3 Tactical for a stretch in October 2026, under its usual $166.50, so sales do come around. Buying today, the lowest price is $166.50 at Primary Arms, above October's low of $152.10, so a better deal may come back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
We ranked every barrel by how often it shows up in real builds on GunPartPicker.
Read the guide: AR-15 Barrel Length & Brand Report →Check it against the live catalog:
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Aggregated and anonymized data showing how builders use this product
Builds in the community that include the Rosco Bloodline AR-15 16" 556 Barrel, 1:7 Twist - BL16M45567C
| Build | Parts | Total |
|---|---|---|
| Smith & Wesson 16" 5.56 NATO AR-15 Build | 16 | $6094.52 |
 | 5 | $776.18 |
 | 17 | $776.41 |
 | 27 | $2053.68 |
 | 6 | $1011.47 |
 | 16 | $1435.76 |
 | 23 | $2025.34 |
 | 14 | $1051.11 |
 | 8 | $644.16 |
 | 15 | $1164.02 |
 | 20 | $1224.83 |
| 15 | $2569.62 |
1 global rating
Top reviews
Rosco Bloodline 16 inch barrel has a chamber finish thats clean and mirror-like under a borescope. Cycles bulk 55gr and match 77gr loads equally well. CHF process shows in the consistent rifling. Holds groups after high round counts.
