Does the Daniel Defense MK18 RIII work with the Geissele Automatics 5.56 Enhanced?
Upper Receiver
Daniel Defense MK18 RIII
from $1454.00
Bolt Carrier Group
Geissele Automatics 5.56 Enhanced
from $385.00
Daniel Defense upper and Geissele bolt carrier group compatibility
Yes, they fit
The Daniel Defense MK18 RIII works with the Geissele Automatics 5.56 Enhanced. 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 Daniel Defense upper and Geissele bolt carrier group
Backed by thousands of qualified builds that have both an upper and a bolt carrier group.
Share of builds with the Daniel Defense MK18 RIII and any bolt carrier group
- This pairGeissele Automatics 5.56 Enhanced13%
- Battle Arms13%
Share of builds with the Geissele Automatics 5.56 Enhanced and any upper
- This pairDaniel Defense MK18 RIII8%
Daniel Defense MK18 RIII
- Of upper picks
- 0.1%
- Median paid
- $1412
Geissele Automatics 5.56 Enhanced
- Of bolt carrier group picks
- 0.1%
- Median paid
- $334
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 Geissele bolt carrier group
The part builders pick most often in each slot alongside these two, checked against both. Parts that conflict are left out.
Charging Handle
Unconfirmed
Muzzle Device
Stock & Brace
Pistol Grip
Lower Receiver
Lewis Machine & Tool MARS-L SOPMOD
Fits both
Gas Block
Daniel Defense MK18 RIII vs Geissele Automatics 5.56: specs and prices
| Daniel Defense MK18 RIII | Geissele Automatics 5.56 | |
|---|---|---|
| Best price | $1454.00 at Primary Arms | $393.00 at Optics Planet |
| Stores | 5 of 5 in stock | 2 of 4 in stock |
| Assembly | Stripped | n/a |
| Platform | AR-15 | n/a |
| Caliber | 5.56 NATO | n/a |
| Length | 10.3 | n/a |
| Cartridge | n/a | 5.56 NATO |
Both for $1847.00 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
- Daniel Defense MK18 RIII: lowest $1259.99 on Jul 21, highest $1527.00 on Aug 2 over the last 90 days.
- Geissele Automatics 5.56 Enhanced: lowest $349.99 on Jul 10, highest $393.00 on Jul 27 over the last 90 days.
Bolt Carrier Groups 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.
Upper Receivers frequently paired with the Geissele Automatics 5.56 Enhanced
Most picked next to it in real builds. Only parts our rules say fit the Geissele Automatics 5.56 Enhanced are listed.
