Does the Daniel Defense 14.5" 5.56 M4A1 Upper work with the Proof Research 11.50" Stainless AR-Type?
Upper Receiver
Daniel Defense 14.5" 5.56 M4A1 Upper
from $1544.00
Barrel
Proof Research 11.50" Stainless AR-Type
from $474.99
Daniel Defense upper and Proof Research barrel compatibility
Yes, they fit
The Daniel Defense 14.5" 5.56 M4A1 Upper works with the Proof Research 11.50" Stainless AR-Type. Our compatibility rules found no conflict between them.
No one has built this exact setup yet, but Daniel Defense uppers with Proof Research 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 Daniel Defense upper and Proof Research barrel
Backed by thousands of qualified builds that have both an upper and a barrel.
Share of builds with the Daniel Defense 14.5" 5.56 M4A1 Upper and any barrel
Daniel Defense 14.5" 5.56 M4A1 Upper
- Of upper picks
- 1.6%
- Median paid
- $1499
Proof Research 11.50" Stainless AR-Type
Not in enough builds yet to report.
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 Daniel Defense upper and Proof Research barrel
The part builders pick most often in each slot alongside these two, checked against both. Parts that conflict are left out.
Charging Handle
Radian Raptor & Talon Safety Selector Combo
Unconfirmed
Lower Receiver
Fits both
Bolt Carrier Group
Fits both
Stock & Brace
Suppressor
Pistol Grip
Daniel Defense 14.5" 5.56 M4A1 vs Proof Research 11.50": specs and prices
| Daniel Defense 14.5" 5.56 | Proof Research 11.50" | |
|---|---|---|
| Best price | $1544.00 at Primary Arms | $474.99 at Palmetto State Armory |
| Stores | 3 of 6 in stock | 3 of 4 in stock |
| Assembly | Complete | n/a |
| Platform | AR-15 | n/a |
| Gas System Length | Carbine | n/a |
| Caliber | 5.56 NATO | .308 Win |
| Length | 14.5 | 24 |
| Twist | n/a | 1:7 |
| Contour | n/a | M4 |
| Thread | n/a | 5/8x24 |
Both for $2018.99 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.
Daniel Defense 14.5" 5.56 M4A1 Upper
Price history, last 90 days
- Daniel Defense 14.5" 5.56 M4A1 Upper: lowest $1339.99 on Jul 21, highest $1621.00 on Aug 2 over the last 90 days.
- Proof Research 11.50" Stainless AR-Type: lowest $474.99 on Sep 23, highest $569.99 on Jul 18 over the last 90 days.
Barrels frequently paired with the Daniel Defense 14.5" 5.56 M4A1 Upper
Most picked next to it in real builds. Only parts our rules say fit the Daniel Defense 14.5" 5.56 M4A1 Upper are listed.
Upper Receivers most paired with Proof Research barrels
The Proof Research 11.50" Stainless AR-Type is not in enough builds yet, so these are the most picked next to any Proof Research barrel. Only parts our rules say fit the Proof Research 11.50" Stainless AR-Type are listed.
