Does the Geissele MK16 Urg-I 5.56mm work with the Geissele .223/5.56 Reliability Enhanced?

Upper Receiver
Geissele MK16 Urg-I 5.56mm
from $1382.99

Bolt Carrier Group
Geissele .223/5.56 Reliability Enhanced
from $19.99
Geissele upper and Geissele bolt carrier group compatibility
Yes, they fit
The Geissele MK16 Urg-I 5.56mm works with the Geissele .223/5.56 Reliability 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 Geissele 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 Geissele MK16 Urg-I 5.56mm and any bolt carrier group
- This pairGeissele .223/5.56 Reliability Enhanced25%
Share of builds with the Geissele .223/5.56 Reliability Enhanced and any upper
- This pairGeissele MK16 Urg-I 5.56mm6%
Geissele MK16 Urg-I 5.56mm
- Of upper picks
- 0.1%
- Median paid
- $1191
Geissele .223/5.56 Reliability Enhanced
- Of bolt carrier group picks
- 0.2%
- Median paid
- $20
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 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.
Geissele MK16 Urg-I 5.56mm vs Geissele .223/5.56 Reliability: specs and prices
| Geissele MK16 Urg-I 5.56mm | Geissele .223/5.56 | |
|---|---|---|
| Best price | $1525.00 at Primary Arms | $19.99 at Sportsmans Outdoor Superstore |
| Stores | 1 of 5 in stock | 0 of 3 in stock |
| Assembly | Complete | 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 $1544.99 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.
Geissele MK16 Urg-I 5.56mm
Price history, last 90 days
- Geissele MK16 Urg-I 5.56mm: lowest $1191.45 on Jul 6, highest $1525.00 on Jul 27 over the last 90 days.
- Geissele .223/5.56 Reliability Enhanced: lowest $385.00 on Sep 4, highest $385.00 on Sep 4 over the last 90 days.
Bolt Carrier Groups frequently paired with the Geissele MK16 Urg-I 5.56mm
Most picked next to it in real builds. Only parts our rules say fit the Geissele MK16 Urg-I 5.56mm are listed.
Upper Receivers frequently paired with the Geissele .223/5.56 Reliability Enhanced
Most picked next to it in real builds. Only parts our rules say fit the Geissele .223/5.56 Reliability Enhanced are listed.

















