Does the RUGER 8506 AR AR 15 Rifle Multi Caliber work with the CMMG MK4/ Forward Assist Coyote Tan?
Lower Receiver
RUGER 8506 AR AR 15 Rifle Multi Caliber Hardcoat Anodized
from $89.99
Upper Receiver
CMMG MK4/ Forward Assist Coyote Tan
from $127.99
Ruger lower and CMMG upper compatibility
Yes, they fit
The RUGER 8506 AR AR 15 Rifle Multi Caliber Hardcoat works with the CMMG MK4/ Forward Assist Coyote Tan. 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 Ruger lower and CMMG upper
Backed by tens of thousands of qualified builds that have both a lower and an upper.
Share of builds with the RUGER 8506 AR AR 15 Rifle Multi Caliber and any upper
- This pairCMMG MK4/ Forward Assist Coyote Tan3%
Share of builds with the CMMG MK4/ Forward Assist Coyote Tan and any lower
- This pairRUGER 8506 AR AR 15 Rifle Multi Caliber Hardcoat11%
RUGER 8506 AR AR 15 Rifle Multi Caliber
- Of lower picks
- 0.3%
- Median paid
- $94
CMMG MK4/ Forward Assist Coyote Tan
- Of upper picks
- 0.1%
- Median paid
- $128
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 Ruger lower and CMMG upper
The part builders pick most often in each slot alongside these two, checked against both. Parts that conflict are left out.
Pistol Grip
Charging Handle
Fits both
Bolt Carrier Group
Aero Precision 5.56 BCG W/C158 Bolt
Fits both
Barrel
Griffin Armament .300 Blackout Hedp
Fits both
Stock & Brace
Handguard
Muzzle Device
Suppressor
RUGER 8506 AR AR 15 Rifle vs CMMG MK4/ Forward Assist: specs and prices
| RUGER 8506 AR AR 15 Rifle | CMMG MK4/ Forward Assist | |
|---|---|---|
| Best price | $89.99 at Brownells | $127.99 at Optics Planet |
| Stores | 0 of 3 in stock | 0 of 1 in stock |
| Assembly | Stripped | Stripped |
| Platform | AR-15 | AR-15 |
| Caliber | Multi | n/a |
| Finish | Black | n/a |
| Color | Black | n/a |
Both for $217.98 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
- RUGER 8506 AR AR 15 Rifle Multi Caliber: lowest $97.90 on Jul 5, highest $109.99 on Jul 18 over the last 90 days.
- CMMG MK4/ Forward Assist Coyote Tan: lowest $123.99 on Aug 29, highest $129.99 on Jul 5 over the last 90 days.
Upper Receivers frequently paired with the RUGER 8506 AR AR 15 Rifle Multi Caliber
Most picked next to it in real builds. Only parts our rules say fit the RUGER 8506 AR AR 15 Rifle Multi Caliber are listed.
Lower Receivers frequently paired with the CMMG MK4/ Forward Assist Coyote Tan
Most picked next to it in real builds. Only parts our rules say fit the CMMG MK4/ Forward Assist Coyote Tan are listed.
