Does the Knights Armament Company SR-30 IWS .300 work with the Rosco Manufacturing Bloodline?
Lower Receiver
Knights Armament Company SR-30 IWS .300
from $1007.28
Bolt Carrier Group
Rosco Manufacturing Bloodline 5.56/300BLK
from $120.60
Knights Armament lower and Rosco Manufacturing bolt carrier group compatibility
Yes, they fit
The Knights Armament Company SR-30 IWS .300 works with the Rosco Manufacturing Bloodline 5.56/300BLK. Our compatibility rules found no conflict between them.
No one has built this exact setup yet, but Knights Armament lowers with Rosco Manufacturing bolt carrier groups 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 Rosco Manufacturing bolt carrier group
Backed by thousands of qualified builds that have both a lower and a bolt carrier group.
Share of builds with the Knights Armament Company SR-30 IWS .300 and any bolt carrier group
Knights Armament Company SR-30 IWS .300
- Of lower picks
- 0.2%
- Median paid
- $1007
Rosco Manufacturing Bloodline
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 Rosco Manufacturing bolt carrier group
The part builders pick most often in each slot alongside these two, checked against both. Parts that conflict are left out.
Charging Handle
Upper Receiver
Stock & Brace
Suppressor
Knights Armament Company SR-30 vs Rosco Manufacturing Bloodline: specs and prices
| Knights Armament Company | Rosco Manufacturing | |
|---|---|---|
| Best price | $1007.28 at BattleHawk Armory | $131.40 at Primary Arms |
| Stores | 0 of 3 in stock | 2 of 8 in stock |
| Assembly | Complete | n/a |
| Platform | AR-15 | n/a |
| Caliber | 300 Blackout | n/a |
| Color | Black | n/a |
| Cartridge | n/a | 5.56 NATO |
| Style | n/a | M16 Bolt Carrier |
| Finish | n/a | Nitride |
Both for $1138.68 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.
Knights Armament Company SR-30 IWS .300
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.
- Rosco Manufacturing Bloodline: lowest $120.60 on Aug 29, highest $164.49 on Sep 21 over the last 90 days.
Bolt Carrier Groups 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 Rosco Manufacturing bolt carrier groups
The Rosco Manufacturing Bloodline is not in enough builds yet, so these are the most picked next to any Rosco Manufacturing bolt carrier group. Only parts our rules say fit the Rosco Manufacturing Bloodline are listed.
