Does the Tacfire .300 Blackout 5" work with the Rosco Manufacturing Bloodline 5.56 M4?
Upper Receiver
Tacfire .300 Blackout 5"
Barrel
Rosco Manufacturing Bloodline 5.56 M4 Carbine
from $131.49
TacFire upper and Rosco Manufacturing barrel compatibility
Yes, they fit
The Tacfire .300 Blackout 5" works with the Rosco Manufacturing Bloodline 5.56 M4 Carbine. Our compatibility rules found no conflict between them.
No one has built this exact setup yet, but TacFire uppers with Rosco Manufacturing barrels are a common pairing.
Counted from real GunPartPicker builds: parts lists people put together while planning to buy.
Checked by the same rules the AR builder runs on every part you add: caliber, frame size, receiver pattern, thread pitch and gas length.
Fit is judged from the specs retailers list, which can be missing or wrong. Confirm with the manufacturer before you buy, and have a qualified gunsmith check any build before you fire it.
How often builders pair the TacFire upper and Rosco Manufacturing barrel
Backed by thousands of qualified builds that have both an upper and a barrel.
Share of builds with the Rosco Manufacturing Bloodline 5.56 M4 and any upper
Tacfire .300 Blackout 5"
- Of upper picks
- 0%
- Median paid
- n/a
Rosco Manufacturing Bloodline 5.56 M4
- Of barrel picks
- 6.6%
- Median paid
- $134
How we count ⌄
These shares come from GunPartPicker's build data: real parts lists people put together while planning a purchase, not sales or surveys. A build counts a part only when it is the final pick for its slot, so parts that were swapped out never count. Fit never comes from these numbers; it comes from our compatibility rules alone.
Frequently built with the TacFire upper and Rosco Manufacturing barrel
The part builders pick most often in each slot alongside these two, checked against both. Parts that conflict are left out.
Charging Handle
Aero Precision Breach Small Levers
Fits both
Gas Block
Bolt Carrier Group
Fits both
Lower Receiver
Unconfirmed
Handguard
Pistol Grip
Stock & Brace
Muzzle Device
Fortis Control 300 Muzzle Brake 5/8x24
Fits, check note
Tacfire .300 Blackout 5" vs Rosco Manufacturing Bloodline: specs and prices
| Tacfire .300 Blackout 5" | Rosco Manufacturing | |
|---|---|---|
| Best price | n/a | $131.49 at Ammunition Depot |
| Stores | n/a | 7 of 8 in stock |
| Assembly | Complete | n/a |
| Platform | AR-15 | n/a |
| Caliber | 300 Blackout | AR-15 |
| Length | 5 | Standard |
| Gas System | n/a | Carbine |
| Twist | n/a | 1:7 |
| Contour | n/a | M4 |
| Thread | n/a | 1/2x28 |
Today's best prices and 90 day price history
Every store we track for each part, cheapest in stock first. Prices are checked through the day.
Price history, last 90 days
- Rosco Manufacturing Bloodline 5.56 M4: lowest $131.49 on Jul 5, highest $162.99 on Aug 4 over the last 90 days.
Barrels most paired with TacFire uppers
The Tacfire .300 Blackout 5" is not in enough builds yet, so these are the most picked next to any TacFire upper. Only parts our rules say fit the Tacfire .300 Blackout 5" are listed.
Upper Receivers frequently paired with the Rosco Manufacturing Bloodline 5.56 M4
Most picked next to it in real builds. Only parts our rules say fit the Rosco Manufacturing Bloodline 5.56 M4 are listed.
