Does the Geissele MK16 Urg-I 5.56mm work with the Q 2-Piece BCG?
Geissele upper and Q bolt carrier group compatibility
Yes, they fit
The Geissele MK16 Urg-I 5.56mm works with the Q 2-Piece BCG. 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 Q 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 pairQ 2-Piece BCG25%
Share of builds with the Q 2-Piece BCG and any upper
- This pairGeissele MK16 Urg-I 5.56mm14%
Geissele MK16 Urg-I 5.56mm
- Of upper picks
- 0.1%
- Median paid
- $1191
Q 2-Piece BCG
- Of bolt carrier group picks
- 0.1%
- Median paid
- $350
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 Q bolt carrier group
The part builders pick most often in each slot alongside these two, checked against both. Parts that conflict are left out.
Stock & Brace
Lower Receiver
Charging Handle
Suppressor
Geissele MK16 Urg-I 5.56mm vs Q 2-Piece BCG: specs and prices
| Geissele MK16 Urg-I 5.56mm | Q 2-Piece BCG | |
|---|---|---|
| Best price | $1525.00 at Primary Arms | $419.99 at Palmetto State Armory |
| Stores | 1 of 5 in stock | 2 of 5 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 |
| Finish | n/a | Nitride |
Both for $1944.99 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.
- Q 2-Piece BCG: lowest $350.00 on Jul 5, highest $475.00 on Jul 9 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 Q 2-Piece BCG
Most picked next to it in real builds. Only parts our rules say fit the Q 2-Piece BCG are listed.
