Does the Radical Firearms 7.62x39 Heavy Barreled work with the Rubber City Armory Stainless Steel?

Upper Receiver
Radical Firearms 7.62x39 Heavy Barreled Upper

Bolt Carrier Group
Rubber City Armory Stainless Steel Firing Pin
from $16.99
Radical Firearms upper and Rubber City Armory bolt carrier group compatibility
They fit, with a catch
The Radical Firearms 7.62x39 Heavy Barreled Upper works with the Rubber City Armory Stainless Steel Firing Pin, with one thing to check: Bolt Carrier Group (5.56 NATO) has a 5.56 / .223 bolt; a 7.62x39mm build needs a 7.62x39 bolt.
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 Radical Firearms upper and Rubber City Armory bolt carrier group
Backed by thousands of qualified builds that have both an upper and a bolt carrier group.
Radical Firearms 7.62x39 Heavy Barreled
- Of upper picks
- 0%
- Median paid
- n/a
Rubber City Armory Stainless Steel
Not in enough builds yet to report.
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 Radical Firearms upper and Rubber City Armory bolt carrier group
The part builders pick most often in each slot alongside these two, checked against both. Parts that conflict are left out.
Handguard

Midwest Industries G4 12.625" M-LOK
Fits both
Charging Handle
Muzzle Device
Radical Firearms 7.62x39 Heavy vs Rubber City Armory Stainless: specs and prices
| Radical Firearms 7.62x39 | Rubber City Armory Stainless | |
|---|---|---|
| Best price | n/a | $16.99 at Primary Arms |
| Stores | n/a | 1 of 1 in stock |
| Assembly | Complete | n/a |
| Platform | AR-15 | n/a |
| Gas System Length | Carbine | n/a |
| Caliber | 7.62x39mm | n/a |
| Length | 12 | n/a |
| Cartridge | n/a | 5.56 NATO |
| Finish | n/a | Nitride |
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.
Radical Firearms 7.62x39 Heavy Barreled Upper
No store lists it today.
Rubber City Armory Stainless Steel Firing Pin
- Primary Arms$16.99
Price history, last 90 days
- Rubber City Armory Stainless Steel: lowest $16.99 on Jul 6, highest $16.99 on Jul 6 over the last 90 days.
Bolt Carrier Groups most paired with Radical Firearms uppers
The Radical Firearms 7.62x39 Heavy Barreled is not in enough builds yet, so these are the most picked next to any Radical Firearms upper. Only parts our rules say fit the Radical Firearms 7.62x39 Heavy Barreled are listed.

Aero Precision 5.56 BCG W/C158 Bolt
Fits, check noteCheck fit
PSA Custom Fathers of Freedom 5.56 Full Auto Profile
Fits, check noteCheck fit
San Tan Tactical Enhanced
Fits, check noteCheck fit
Bravo Company
Fits, check noteCheck fit
Cryptic Coatings 5.56 NATO
Fits, check noteCheck fit
Diamondback Firearms 5.56
Fits, check noteCheck fit
Upper Receivers most paired with Rubber City Armory bolt carrier groups
The Rubber City Armory Stainless Steel is not in enough builds yet, so these are the most picked next to any Rubber City Armory bolt carrier group. Only parts our rules say fit the Rubber City Armory Stainless Steel are listed.

PSA GEN2 KS-47 8.5" Pistol-Length 7.62x39 1/10 Nitride
Fits, check noteCheck fit

Ghost Firearms Elite 7.62X39 Barreled
Fits, check noteCheck fit








