Does the Unknown CMMG Banshee 200 MkGs 9mm AR work with the Stern Defense Nickel Boron 9mm?
Upper Receiver
Unknown CMMG Banshee 200 MkGs 9mm AR Upper
from $629.45
Bolt Carrier Group
Stern Defense Nickel Boron 9mm
from $169.99
Unknown upper and Stern Defense bolt carrier group compatibility
Yes, they fit
The Unknown CMMG Banshee 200 MkGs 9mm AR Upper works with the Stern Defense Nickel Boron 9mm. 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 Unknown upper and Stern Defense bolt carrier group
Backed by thousands of qualified builds that have both an upper and a bolt carrier group.
Share of builds with the Stern Defense Nickel Boron 9mm and any upper
- This pairUnknown CMMG Banshee 200 MkGs 9mm AR Upper6%
Unknown CMMG Banshee 200 MkGs 9mm AR
Not in enough builds yet to report.
Stern Defense Nickel Boron 9mm
- Of bolt carrier group picks
- 0.2%
- Median paid
- $170
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 Unknown upper and Stern Defense 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
Aero Precision Breach Small Levers
Fits both
Lower Receiver
Pistol Grip
Handguard
Suppressor
Unknown CMMG Banshee 200 MkGs vs Stern Defense Nickel Boron 9mm: specs and prices
| Unknown CMMG Banshee 200 | Stern Defense Nickel Boron | |
|---|---|---|
| Best price | $629.45 at BattleHawk Armory | $169.99 at Optics Planet |
| Stores | 0 of 1 in stock | 3 of 4 in stock |
| Assembly | Complete | n/a |
| Platform | AR-9 | n/a |
| Caliber | 9mm | n/a |
| Length | 8 | n/a |
| Cartridge | n/a | 9mm |
| Finish | n/a | Nickel Boron |
Both for $799.44 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
- Unknown CMMG Banshee 200 MkGs 9mm AR: lowest $629.45 on Jul 5, highest $629.45 on Jul 5 over the last 90 days.
- Stern Defense Nickel Boron 9mm: lowest $144.49 on Jul 5, highest $170.99 on Jul 24 over the last 90 days.
Bolt Carrier Groups frequently paired with the Unknown CMMG Banshee 200 MkGs 9mm AR
Most picked next to it in real builds. Only parts our rules say fit the Unknown CMMG Banshee 200 MkGs 9mm AR are listed.
Upper Receivers frequently paired with the Stern Defense Nickel Boron 9mm
Most picked next to it in real builds. Only parts our rules say fit the Stern Defense Nickel Boron 9mm are listed.
