Does the CMMG Banshee MK4 Upper .22 LR 9 Barrel work with the CMMG .308 Win/7.62?
Upper Receiver
CMMG Banshee MK4 Upper .22 LR 9 Barrel
from $540.01
Bolt Carrier Group
CMMG .308 Win/7.62
from $221.36
CMMG upper and CMMG bolt carrier group compatibility
Yes, they fit
The CMMG Banshee MK4 Upper .22 LR 9 Barrel works with the CMMG .308 Win/7.62. Our compatibility rules found no conflict between them.
No one has built this exact setup yet, but CMMG uppers with CMMG bolt carrier groups are a common pairing.
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 CMMG upper and CMMG bolt carrier group
Backed by thousands of qualified builds that have both an upper and a bolt carrier group.
Share of builds with the CMMG .308 Win/7.62 and any upper
- Aero Precision M4E1 Threaded UpperDoes not fit3%
CMMG Banshee MK4 Upper .22 LR 9 Barrel
Not in enough builds yet to report.
CMMG .308 Win/7.62
- Of bolt carrier group picks
- 0.9%
- Median paid
- $220
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 CMMG upper and CMMG 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
Barrel
FAXON Firearms Match .308 Win 18"
Fits both
Stock & Brace
Suppressor
Gas Block
CMMG Banshee MK4 Upper .22 LR vs CMMG .308 Win/7.62: specs and prices
| CMMG Banshee MK4 Upper .22 | CMMG .308 Win/7.62 | |
|---|---|---|
| Best price | $540.01 at BattleHawk Armory | $255.40 at Classic Firearms |
| Stores | 0 of 4 in stock | 4 of 7 in stock |
| Assembly | Complete | n/a |
| Platform | AR-15 | n/a |
| Caliber | .22 LR | n/a |
| Length | 9 | n/a |
| Cartridge | n/a | .308 Win |
| Finish | n/a | Phosphate |
| Material | n/a | Steel |
Both for $795.41 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.
CMMG Banshee MK4 Upper .22 LR 9 Barrel
Price history, last 90 days
- CMMG Banshee MK4 Upper .22 LR 9 Barrel: lowest $540.01 on Jul 5, highest $649.99 on Jul 26 over the last 90 days.
- CMMG .308 Win/7.62: lowest $221.36 on Jul 5, highest $307.99 on Jul 6 over the last 90 days.
Bolt Carrier Groups most paired with CMMG uppers
The CMMG Banshee MK4 Upper .22 LR 9 Barrel is not in enough builds yet, so these are the most picked next to any CMMG upper. Only parts our rules say fit the CMMG Banshee MK4 Upper .22 LR 9 Barrel are listed.
Upper Receivers frequently paired with the CMMG .308 Win/7.62
Most picked next to it in real builds. Only parts our rules say fit the CMMG .308 Win/7.62 are listed.
