Does the CMMG ENDEAVOR MK4/ Trigger Coyote Tan work with the Daniel Defense DDM4 300S .300 10.3" Bbl?

Lower Receiver
CMMG ENDEAVOR MK4/ Trigger Coyote Tan

Upper Receiver
Daniel Defense DDM4 300S .300 10.3" Bbl Group
from $1392.00
CMMG lower and Daniel Defense upper compatibility
Yes, they fit
The CMMG ENDEAVOR MK4/ Trigger Coyote Tan works with the Daniel Defense DDM4 300S .300 10.3" Bbl Group. Our compatibility rules found no conflict between them.
This exact setup is in a real GunPartPicker build.
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 CMMG lower and Daniel Defense upper
Backed by tens of thousands of qualified builds that have both a lower and an upper.
Share of builds with the Daniel Defense DDM4 300S .300 10.3" Bbl and any lower
- This pairCMMG ENDEAVOR MK4/ Trigger Coyote Tan17%
CMMG ENDEAVOR MK4/ Trigger Coyote Tan
Not in enough builds yet to report.
Daniel Defense DDM4 300S .300 10.3" Bbl
- Of upper picks
- 0%
- Median paid
- $1148
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 CMMG lower and Daniel Defense upper
The part builders pick most often in each slot alongside these two, checked against both. Parts that conflict are left out.
Bolt Carrier Group

FAXON Firearms 5.56 Nitride TIN PVD
Fits both
Pistol Grip
Buffer Tube Assembly
Stock & Brace
CMMG ENDEAVOR MK4/ Trigger vs Daniel Defense DDM4 300S .300: specs and prices
| CMMG ENDEAVOR MK4/ Trigger | Daniel Defense DDM4 300S | |
|---|---|---|
| Best price | n/a | $1392.00 at BattleHawk Armory |
| Stores | n/a | 2 of 5 in stock |
| Assembly | Complete | Complete |
| Platform | AR-15 | AR-15 |
| Caliber | Multi | 300 Blackout |
| Trigger Pin | .154 | n/a |
| Finish | Cerakote | n/a |
| Color | FDE | n/a |
| Gas System Length | n/a | Pistol |
| Length | n/a | 10.3 |
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
- CMMG ENDEAVOR MK4/ Trigger Coyote Tan: lowest $385.99 on Jul 5, highest $385.99 on Jul 5 over the last 90 days.
- Daniel Defense DDM4 300S .300 10.3" Bbl: lowest $1148.35 on Jul 6, highest $1563.99 on Sep 18 over the last 90 days.
Upper Receivers most paired with CMMG lowers
The CMMG ENDEAVOR MK4/ Trigger Coyote Tan is not in enough builds yet, so these are the most picked next to any CMMG lower. Only parts our rules say fit the CMMG ENDEAVOR MK4/ Trigger Coyote Tan are listed.
Lower Receivers frequently paired with the Daniel Defense DDM4 300S .300 10.3" Bbl
Most picked next to it in real builds. Only parts our rules say fit the Daniel Defense DDM4 300S .300 10.3" Bbl are listed.

















