Does the Geissele Automatics 14.5 Super Duty Nano work with the Rosco Manufacturing Bloodline 5.56 M4?

Upper Receiver
Geissele Automatics 14.5 Super Duty Nano
from $1132.99

Barrel
Rosco Manufacturing Bloodline 5.56 M4 Carbine
from $131.49
Geissele upper and Rosco Manufacturing barrel compatibility
Yes, they fit
The Geissele Automatics 14.5 Super Duty Nano 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 Geissele 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 Geissele 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
Geissele Automatics 14.5 Super Duty Nano
- 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 Geissele 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
Handguard
Pistol Grip
Stock & Brace
Muzzle Device

Fortis Control 300 Muzzle Brake 5/8x24
Fits, check note
Geissele Automatics 14.5 Super vs Rosco Manufacturing Bloodline: specs and prices
| Geissele Automatics 14.5 | Rosco Manufacturing | |
|---|---|---|
| Best price | $1132.99 at Brownells | $131.49 at Ammunition Depot |
| Stores | 0 of 2 in stock | 7 of 8 in stock |
| Assembly | Complete | n/a |
| Platform | AR-15 | n/a |
| Gas System Length | Mid-Length | n/a |
| Caliber | 5.56 NATO | AR-15 |
| Length | 14.5 | Standard |
| Gas System | n/a | Carbine |
| Twist | n/a | 1:7 |
| Contour | n/a | M4 |
| Thread | n/a | 1/2x28 |
Both for $1264.48 at today's best prices.
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
- Geissele Automatics 14.5 Super Duty Nano: lowest $1132.99 on Aug 30, highest $1132.99 on Aug 30 over the 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 Geissele uppers
The Geissele Automatics 14.5 Super Duty Nano is not in enough builds yet, so these are the most picked next to any Geissele upper. Only parts our rules say fit the Geissele Automatics 14.5 Super Duty Nano 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.


















