Does the Rain Ordnance SPEC15 Forged 223 Rem/5.56 work with the Daniel Defense M4A1 FSP FDE 5.56 NATO?
Lower Receiver
Rain Ordnance SPEC15 Forged 223 Rem/5.56 NATO Lower
from $122.29
Upper Receiver
Daniel Defense M4A1 FSP FDE 5.56 NATO 14.5" Bbl Group
from $1457.00
Black Rain Ordnance lower and upper compatibility
Yes, they fit
The Rain Ordnance SPEC15 Forged 223 Rem/5.56 NATO works with the Daniel Defense M4A1 FSP FDE 5.56 NATO 14.5" Bbl. 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 Black Rain Ordnance lower and 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
Rain Ordnance SPEC15 Forged 223 Rem/5.56
- Of lower picks
- 0.1%
- Median paid
- $122
Daniel Defense M4A1 FSP FDE 5.56 NATO
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 Black Rain Ordnance lower and upper
The part builders pick most often in each slot alongside these two, checked against both. Parts that conflict are left out.
Charging Handle
Aero Precision Breach Small Levers
Fits both
Trigger
Pistol Grip
Bolt Carrier Group
Fits both
Handguard
Barrel
Muzzle Device
Suppressor
Rain Ordnance SPEC15 Forged vs Daniel Defense M4A1 FSP FDE: specs and prices
| Rain Ordnance SPEC15 Forged | Daniel Defense M4A1 FSP FDE | |
|---|---|---|
| Best price | $122.29 at BattleHawk Armory | $1457.00 at AR15 Discounts |
| Stores | 0 of 1 in stock | 2 of 2 in stock |
| Assembly | Stripped | Complete |
| Platform | AR-15 | AR-15 |
| Caliber | 5.56 NATO | 5.56 NATO |
| Color | Black | n/a |
| Receiver Type | n/a | M4 |
| Length | n/a | 14.5 |
Both for $1579.29 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
- Daniel Defense M4A1 FSP FDE 5.56 NATO: lowest $1457.00 on Jul 5, highest $1457.00 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 most paired with uppers
The Daniel Defense M4A1 FSP FDE 5.56 NATO is not in enough builds yet, so these are the most picked next to any upper. Only parts our rules say fit the Daniel Defense M4A1 FSP FDE 5.56 NATO are listed.
