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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 was the ninth most added barrel on GunPartPicker in August 2026, behind the Daniel Defense 14.5" 5.56 NATO CHF Mid-Length 1:7 Government Contour AR-15 Barrel With Gas Block, with about 2% of all barrels added to builds. Down from #8 in July. 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 August 2026, and today 6 of the 9 retailers we track have it in stock. The best price crept up from $135.99 to $140.50 over August 2026. Buying today, the lowest price is $140.99 at Ammunition Depot.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 31 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 |
|---|---|---|
 | 5 | $742.38 |
 | 17 | $747.15 |
 | 27 | $1966.30 |
 | 6 | $943.71 |
 | 16 | $1386.90 |
 | 23 | $1974.86 |
 | 14 | $1028.52 |
 | 8 | $616.57 |
 | 15 | $1134.46 |
 | 20 | $1156.46 |
| 15 | $2669.19 |
| 14 | $732.43 |
4 global ratings
Top reviews
Rosco Bloodline 16 inch 5.56 CHF barrel groups under 1 MOA with handloaded 77gr SMK and under 2 MOA with bulk 55gr. Cold hammer forging shows in the consistent rifling. Holds up to high round counts.
Rosco Bloodline 16 inch 5.56 barrel groups consistently sub 1 MOA with handloaded 77gr SMK. Bloodline barrels are CHF and the rifling is clean. 1:7 twist as expected for the load weights Im running.
Rosco Bloodline 16 inch barrel has eaten a couple hundred rounds and still cleans up easy. Zero copper fouling so far which is impressive. CHF process makes for consistent rifling. 1:7 twist handles 55 through 77gr loads.
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.
