Does the CMMG MK3 Semi-automatic Stripped 308 work with the Cryptic BCG?
Lower Receiver
CMMG MK3 Semi-automatic Stripped 308 Winchester
from $213.39
Bolt Carrier Group
Cryptic BCG
from $180.99
CMMG lower and Cryptic Coatings bolt carrier group compatibility
Yes, they fit
The CMMG MK3 Semi-automatic Stripped 308 Winchester works with the Cryptic BCG. Our compatibility rules found no conflict between them.
This exact setup has been built more than once on GunPartPicker.
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 lower and Cryptic Coatings bolt carrier group
Backed by thousands of qualified builds that have both a lower and a bolt carrier group.
Share of builds with the CMMG MK3 Semi-automatic Stripped 308 and any bolt carrier group
- This pairCryptic BCG22%
- Bravo CompanyDoes not fit11%
Share of builds with the Cryptic BCG and any lower
- This pairCMMG MK3 Semi-automatic Stripped 308 Winchester40%
CMMG MK3 Semi-automatic Stripped 308
- Of lower picks
- 0.1%
- Median paid
- $213
Cryptic BCG
- Of bolt carrier group picks
- 0%
- Median paid
- $190
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 lower and Cryptic Coatings bolt carrier group
The part builders pick most often in each slot alongside these two, checked against both. Parts that conflict are left out.
Upper Receiver
Pistol Grip
Handguard
ODIN Works 308 O2 Lite Forend M-LOK
Fits both
Charging Handle
Rifle Scope
Suppressor
Barrel
CMMG MK3 Semi-automatic vs Cryptic BCG: specs and prices
| CMMG MK3 Semi-automatic | Cryptic BCG | |
|---|---|---|
| Best price | $237.54 at Classic Firearms | $180.99 at Optics Planet |
| Stores | 3 of 4 in stock | 1 of 2 in stock |
| Assembly | Stripped | n/a |
| Platform | AR-10 | n/a |
| Caliber | .308 Win | n/a |
| Finish | Hardcoat Anodized | Phosphate |
| Color | Black | n/a |
| Cartridge | n/a | .308 Win |
Both for $418.53 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 MK3 Semi-automatic Stripped 308: lowest $214.99 on Jul 7, highest $274.99 on Jul 5 over the last 90 days.
- Cryptic BCG: lowest $180.99 on Jul 21, highest $199.03 on Jul 7 over the last 90 days.
Bolt Carrier Groups frequently paired with the CMMG MK3 Semi-automatic Stripped 308
Most picked next to it in real builds. Only parts our rules say fit the CMMG MK3 Semi-automatic Stripped 308 are listed.
Lower Receivers frequently paired with the Cryptic BCG
Most picked next to it in real builds. Only parts our rules say fit the Cryptic BCG are listed.
