Does the CMMG MK4 Resolute Group 5.56x45mm NATO work with the CMMG 5.56?
Upper Receiver
CMMG MK4 Resolute Group 5.56x45mm NATO 16.1in Armor
from $849.99
Bolt Carrier Group
CMMG 5.56
from $128.36
CMMG upper and CMMG bolt carrier group compatibility
Yes, they fit
The CMMG MK4 Resolute Group 5.56x45mm NATO 16.1in works with the CMMG 5.56. Our compatibility rules found no conflict between them.
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.
CMMG MK4 Resolute Group vs CMMG 5.56: specs and prices
| CMMG MK4 Resolute Group | CMMG 5.56 | |
|---|---|---|
| Best price | $849.99 at Optics Planet | $128.36 at Classic Firearms |
| Stores | 1 of 1 in stock | 6 of 7 in stock |
| Assembly | Complete | n/a |
| Platform | AR-15 | n/a |
| Caliber | 5.56 NATO | n/a |
| Length | 16.1 | n/a |
| Cartridge | n/a | 5.56 NATO |
| Finish | n/a | Nitride |
Both for $978.35 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
- CMMG MK4 Resolute Group 5.56x45mm NATO: lowest $819.99 on Jul 5, highest $849.99 on Jul 14 over the last 90 days.
- CMMG 5.56: lowest $128.89 on Aug 7, highest $174.95 on Jul 6 over the last 90 days.