Does the Spike's Tactical Spikes Tactical Lower work with the CMMG 8.2" 300BLK Mr?

Lower Receiver
Spike's Tactical Spikes Tactical Lower
from $107.10

Barrel
CMMG 8.2" 300BLK Mr
from $132.54
Spike's Tactical lower and CMMG barrel compatibility
Yes, they fit
The Spike's Tactical Spikes Tactical Lower works with the CMMG 8.2" 300BLK Mr. 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 Spike's Tactical lower and CMMG barrel
Backed by thousands of qualified builds that have both a lower and a barrel.
Share of builds with the Spike's Tactical Spikes Tactical Lower and any barrel
- This pairCMMG 8.2" 300BLK Mr17%
Share of builds with the CMMG 8.2" 300BLK Mr and any lower
- This pairSpike's Tactical Spikes Tactical Lower7%
Spike's Tactical Spikes Tactical Lower
- Of lower picks
- 0.1%
- Median paid
- $107
CMMG 8.2" 300BLK Mr
- Of barrel picks
- 0.3%
- Median paid
- $132
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 Spike's Tactical lower and CMMG barrel
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
Gas Block
Stock & Brace
Bolt Carrier Group

Aero Precision 5.56 BCG W/C158 Bolt
Fits both
Trigger
Handguard
Spike's Tactical Spikes vs CMMG 8.2" 300BLK Mr: specs and prices
| Spike's Tactical Spikes | CMMG 8.2" 300BLK Mr | |
|---|---|---|
| Best price | $107.10 at Primary Arms | $144.99 at GritR Sports |
| Stores | 0 of 4 in stock | 2 of 9 in stock |
| Assembly | Stripped | n/a |
| Platform | AR-15 | n/a |
| Caliber | Multi | 300 Blackout |
| Trigger Pin | .154 | n/a |
| Finish | Hardcoat Anodized | n/a |
| Color | Black | n/a |
| Gas System | n/a | Pistol |
| Length | n/a | 8.2 |
| Twist | n/a | 1:10 |
| Contour | n/a | Medium |
| Thread | n/a | 5/8x24 |
| Weight | 8.6 | n/a |
Both for $252.09 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.
Spike's Tactical Spikes Tactical Lower
Price history, last 90 days
- Spike's Tactical Spikes Tactical Lower: lowest $107.10 on Jul 5, highest $129.99 on Jul 17 over the last 90 days.
- CMMG 8.2" 300BLK Mr: lowest $132.54 on Jul 5, highest $199.95 on Jul 17 over the last 90 days.
Barrels frequently paired with the Spike's Tactical Spikes Tactical Lower
Most picked next to it in real builds. Only parts our rules say fit the Spike's Tactical Spikes Tactical Lower are listed.
Lower Receivers frequently paired with the CMMG 8.2" 300BLK Mr
Most picked next to it in real builds. Only parts our rules say fit the CMMG 8.2" 300BLK Mr are listed.

















