Does the Rain Ordnance SPEC15 Forged 223 Rem/5.56 work with the Rain Ordnance Flat Top Milled?
Lower Receiver
Rain Ordnance SPEC15 Forged 223 Rem/5.56 NATO Lower
from $122.29
Upper Receiver
Rain Ordnance Flat Top Milled
from $217.99
Black Rain Ordnance lower and Black Rain Ordnance upper compatibility
Yes, they fit
The Rain Ordnance SPEC15 Forged 223 Rem/5.56 NATO works with the Rain Ordnance Flat Top Milled. 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 Black Rain Ordnance lower and Black Rain Ordnance upper
Backed by tens of thousands of qualified builds that have both a lower and an upper.
Share of builds with the Rain Ordnance SPEC15 Forged 223 Rem/5.56 and any upper
- This pairRain Ordnance Flat Top Milled17%
Share of builds with the Rain Ordnance Flat Top Milled and any lower
- This pairRain Ordnance SPEC15 Forged 223 Rem/5.56 NATO40%
Rain Ordnance SPEC15 Forged 223 Rem/5.56
- Of lower picks
- 0.1%
- Median paid
- $122
Rain Ordnance Flat Top Milled
- Of upper picks
- 0%
- Median paid
- $224
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 Black Rain Ordnance lower and Black Rain Ordnance 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
Gas Block
Muzzle Device
Bolt Carrier Group
Fits both
Stock & Brace
Handguard
Barrel
Rain Ordnance SPEC15 Forged vs Rain Ordnance Flat Top Milled: specs and prices
| Rain Ordnance SPEC15 Forged | Rain Ordnance Flat Top | |
|---|---|---|
| Best price | $122.29 at BattleHawk Armory | $217.99 at Palmetto State Armory |
| Stores | 0 of 1 in stock | 1 of 2 in stock |
| Assembly | Stripped | Stripped |
| Platform | AR-15 | AR-15 |
| Caliber | 5.56 NATO | 5.56 NATO |
| Color | Black | n/a |
| Receiver Type | n/a | Flat Top |
Both for $340.28 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
- Rain Ordnance Flat Top Milled: lowest $217.99 on Aug 17, highest $233.52 on Jul 5 over the last 90 days.
Upper Receivers frequently paired with the Rain Ordnance SPEC15 Forged 223 Rem/5.56
Most picked next to it in real builds. Only parts our rules say fit the Rain Ordnance SPEC15 Forged 223 Rem/5.56 are listed.
Lower Receivers frequently paired with the Rain Ordnance Flat Top Milled
Most picked next to it in real builds. Only parts our rules say fit the Rain Ordnance Flat Top Milled are listed.
