Does the Knights Armament Company SR-30 IWS .300 work with the Knights Armament SR-15 KS-2 5.56 NATO?
Lower Receiver
Knights Armament Company SR-30 IWS .300
from $1007.28
Upper Receiver
Knights Armament SR-15 KS-2 5.56 NATO 14.5" BBL Assembled
from $1710.00
Knights Armament lower and Knights Armament upper compatibility
Yes, they fit
The Knights Armament Company SR-30 IWS .300 works with the Knights Armament SR-15 KS-2 5.56 NATO 14.5" BBL. Our compatibility rules found no conflict between them.
No one has built this exact setup yet, but Knights Armament lowers with Knights Armament uppers are a common pairing.
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 Knights Armament lower and Knights Armament upper
Backed by tens of thousands of qualified builds that have both a lower and an upper.
Share of builds with the Knights Armament Company SR-30 IWS .300 and any upper
Knights Armament Company SR-30 IWS .300
- Of lower picks
- 0.2%
- Median paid
- $1007
Knights Armament SR-15 KS-2 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 Knights Armament lower and Knights Armament upper
The part builders pick most often in each slot alongside these two, checked against both. Parts that conflict are left out.
Bolt Carrier Group
FAXON Firearms 5.56 Nitride TIN PVD
Fits both
Charging Handle
Aero Precision Breach Small Levers
Fits both
Suppressor
Knights Armament Company SR-30 vs Knights Armament SR-15 KS-2: specs and prices
| Knights Armament Company | Knights Armament SR-15 KS-2 | |
|---|---|---|
| Best price | $1007.28 at BattleHawk Armory | $2499.99 at BattleHawk Armory |
| Stores | 0 of 3 in stock | 1 of 2 in stock |
| Assembly | Complete | Complete |
| Platform | AR-15 | AR-15 |
| Caliber | 300 Blackout | 5.56 NATO |
| Color | Black | n/a |
| Receiver Type | n/a | M4 |
| Length | n/a | 14.5 |
Both for $3507.27 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
- Knights Armament Company SR-30 IWS .300: lowest $1007.28 on Jul 5, highest $1099.99 on Jul 6 over the last 90 days.
- Knights Armament SR-15 KS-2 5.56 NATO: lowest $1710.00 on Jul 6, highest $1710.00 on Jul 6 over the last 90 days.
Upper Receivers frequently paired with the Knights Armament Company SR-30 IWS .300
Most picked next to it in real builds. Only parts our rules say fit the Knights Armament Company SR-30 IWS .300 are listed.
Lower Receivers most paired with Knights Armament uppers
The Knights Armament SR-15 KS-2 5.56 NATO is not in enough builds yet, so these are the most picked next to any Knights Armament upper. Only parts our rules say fit the Knights Armament SR-15 KS-2 5.56 NATO are listed.
