Does the Ke Arms Ke-15 Forged 5.56mm work with the Daniel Defense MK18 RIII?

Lower Receiver
Ke Arms Ke-15 Forged 5.56mm
from $196.99

Upper Receiver
Daniel Defense MK18 RIII
from $1454.00
KE Arms lower and Daniel Defense upper compatibility
Yes, they fit
The Ke Arms Ke-15 Forged 5.56mm works with the Daniel Defense MK18 RIII. 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 KE Arms 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 Ke Arms Ke-15 Forged 5.56mm and any upper
- This pairDaniel Defense MK18 RIII1%
Share of builds with the Daniel Defense MK18 RIII and any lower
- This pairKe Arms Ke-15 Forged 5.56mm6%
Ke Arms Ke-15 Forged 5.56mm
- Of lower picks
- 0.4%
- Median paid
- $197
Daniel Defense MK18 RIII
- Of upper picks
- 0.1%
- Median paid
- $1412
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 KE Arms 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.
Handguard

TacFire Maximize Your 's Potential
Fits both
Muzzle Device
Barrel
Gas Block
Pistol Grip
Buffer Tube Assembly
Stock & Brace
Ke Arms Ke-15 Forged 5.56mm vs Daniel Defense MK18 RIII: specs and prices
| Ke Arms Ke-15 Forged 5.56mm | Daniel Defense MK18 RIII | |
|---|---|---|
| Best price | $196.99 at KY Gun Company | $1454.00 at Primary Arms |
| Stores | 0 of 2 in stock | 5 of 5 in stock |
| Assembly | Complete | Stripped |
| Platform | AR-15 | AR-15 |
| Caliber | 5.56 NATO | 5.56 NATO |
| Finish | Hardcoat Anodized | n/a |
| Color | Black | n/a |
| Length | n/a | 10.3 |
Both for $1650.99 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.
Price history, last 90 days
- Ke Arms Ke-15 Forged 5.56mm: lowest $196.99 on Jul 5, highest $299.95 on Aug 30 over the last 90 days.
- Daniel Defense MK18 RIII: lowest $1259.99 on Jul 21, highest $1527.00 on Aug 2 over the last 90 days.
Upper Receivers frequently paired with the Ke Arms Ke-15 Forged 5.56mm
Most picked next to it in real builds. Only parts our rules say fit the Ke Arms Ke-15 Forged 5.56mm are listed.
Lower Receivers frequently paired with the Daniel Defense MK18 RIII
Most picked next to it in real builds. Only parts our rules say fit the Daniel Defense MK18 RIII are listed.






















