Does the Spike's Tactical Flat Top Upper w/ work with the Stern Defense Nickel Boron 9mm?
Upper Receiver
Spike's Tactical Flat Top Upper w/ Ejection Port Door
from $103.50
Bolt Carrier Group
Stern Defense Nickel Boron 9mm
from $169.99
Spike's Tactical upper and Stern Defense bolt carrier group compatibility
Yes, they fit
The Spike's Tactical Flat Top Upper w/ Ejection Port works with the Stern Defense Nickel Boron 9mm. 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 upper and Stern Defense bolt carrier group
Backed by thousands of qualified builds that have both an upper and a bolt carrier group.
Share of builds with the Spike's Tactical Flat Top Upper w/ and any bolt carrier group
- FailZero AR913%
- This pairStern Defense Nickel Boron 9mm3%
Share of builds with the Stern Defense Nickel Boron 9mm and any upper
Spike's Tactical Flat Top Upper w/
- Of upper picks
- 0.3%
- Median paid
- $104
Stern Defense Nickel Boron 9mm
- Of bolt carrier group picks
- 0.2%
- Median paid
- $170
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 upper and Stern Defense bolt carrier group
The part builders pick most often in each slot alongside these two, checked against both. Parts that conflict are left out.
Lower Receiver
Spike's Tactical Spider 9mm Lower
Fits both
Charging Handle
Aero Precision Breach Small Levers
Fits both
Stock & Brace
Barrel
Pistol Grip
Handguard
Midwest Industries SIG MPX M-LOK
Fits both
Gas Block
Spike's Tactical Flat Top vs Stern Defense Nickel Boron 9mm: specs and prices
| Spike's Tactical Flat Top | Stern Defense Nickel Boron | |
|---|---|---|
| Best price | $103.50 at BattleHawk Armory | $169.99 at Optics Planet |
| Stores | 3 of 4 in stock | 3 of 4 in stock |
| Assembly | Stripped | n/a |
| Platform | AR-9 | n/a |
| Caliber | 9mm | n/a |
| Receiver Type | Flat Top | n/a |
| Cartridge | n/a | 9mm |
| Finish | n/a | Nickel Boron |
Both for $273.49 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
- Spike's Tactical Flat Top Upper w/: lowest $103.50 on Jul 11, highest $112.99 on Jul 6 over the last 90 days.
- Stern Defense Nickel Boron 9mm: lowest $144.49 on Jul 5, highest $170.99 on Jul 24 over the last 90 days.
Bolt Carrier Groups frequently paired with the Spike's Tactical Flat Top Upper w/
Most picked next to it in real builds. Only parts our rules say fit the Spike's Tactical Flat Top Upper w/ are listed.
Upper Receivers frequently paired with the Stern Defense Nickel Boron 9mm
Most picked next to it in real builds. Only parts our rules say fit the Stern Defense Nickel Boron 9mm are listed.
