Does the CMMG MK/4 Armor work with the Battle Arms Development 9mm BCG?
Upper Receiver
CMMG MK/4 Armor
from $130.55
Bolt Carrier Group
Battle Arms Development 9mm BCG
from $169.95
CMMG upper and Battle Arms Development bolt carrier group compatibility
Yes, they fit
The CMMG MK/4 Armor works with the Battle Arms Development 9mm BCG. 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 MK/4 Armor vs Battle Arms Development 9mm: specs and prices
| CMMG MK/4 Armor | Battle Arms Development 9mm | |
|---|---|---|
| Best price | $134.99 at Palmetto State Armory | $186.49 at Optics Planet |
| Stores | 2 of 3 in stock | 1 of 6 in stock |
| Assembly | Stripped | n/a |
| Platform | AR-15 | n/a |
| Cartridge | n/a | 9mm |
| Finish | n/a | Nitride |
Both for $321.48 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 MK/4 Armor: lowest $130.55 on Jul 5, highest $144.79 on Jul 24 over the last 90 days.
- Battle Arms Development 9mm BCG: lowest $158.06 on Aug 4, highest $186.49 on Sep 25 over the last 90 days.