Resolute Mk4 300BLK Assembled Upper Rcvr 16.1" Bbl Black
$452.49 at Ammunition Depot · 5 stores
In stock
AIM Sports Inc Complete AR Rifle Kit Mid-Length 300 BLK 16in Black Large
Aim Sports Inc · Upper Receiver
No ratings yetBest price
$449.99at OpticsPlanet
Out of stock Sale checked Oct 23, 2026
In stock now instead
- Resolute Mk4 300BLK Assembled Upper Rcvr 16.1" Bbl Black $452.49at Ammunition Depot
- Andro Corp Industries AR-15 Complete M-LOK Upper Receiver with … $399.99at MidwayUSA
- Andro Corp Industries AR-15 Complete M-LOK Upper Receiver with … $399.99at MidwayUSA
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| OpticsPlanet | $449.99Salechecked Oct 23, 2026 | Out of stock | Buy at OpticsPlanet |
Prices and availability change often, so confirm on the store's site before you buy. We may earn a commission from these links.
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Price history
Dashed line = out of stock. Tracking since Oct 12, 2026.
Show the prices as a table
| Store | Latest | Lowest | Highest |
|---|---|---|---|
| OpticsPlanet | $449.99 | $449.99 | $449.99 |
Since Oct 12, 2026.
About this part
The AIM Sports Inc Complete AR Rifle Kit Mid-Length 300 BLK 16in Black Large is an AR-15 complete upper receiver from Aim Sports Inc. One store lists it, OpticsPlanet at $449.99.
Fits and works with
- Caliber
- 300 Blackout · Shop matching ammo
- Bolt
- Standard AR-15 (5.56 / 300 BLK / .350 Legend) · Bolt carrier groups
- Gas system
- Mid-length · Handguards
- Barrel length
- 16" · Handguards
Specifications
- Manufacturer
- Aim Sports Inc
- Color
- Black
- Type
- Complete
- Platform
- AR-15
- Caliber
- 300 Blackout
From the manufacturer
AIM Sports Inc Complete AR Rifle Kit Mid-Length 300 Blk 16in Black Large Black Large. Specifications for AIM Sports Inc Complete AR-15 .300 Blk 16in Upper Receiver W/ BCG LPK & Mil Spec Stock Buffer Kit: Manufacturer: AIM Sports Inc Caliber: .300 AAC Blackout Barrel Length: 16 in Color: Black Features of AIM Sports Inc Complete AR-15 .300 Blk 16in Upper Receiver W/ BCG LPK & Mil Spec Stock Buffer Kit 16" Barrel 4150 Chrome Moly Vanadium Steel A2 muzzle brake and crush washer Mid length gas tube and low profile gas block Mil-Spec Forged 7075-T6 complete Upper with dust cover and forward assist Bolt Carrier Group 8620 steel and bolt is 9310 tool steel with a Nitride finish Mil Spec Buffer Kit - 3.0oz buffer carbine spring castle nut end plate mil-spec buffer and stock Lower Parts Kit - Complete lower parts kit includes fire control group and A2 Grip Package Contents: AIM Sports Inc Complete AR-15 .300 Blk 16in Upper Receiver W/ BCG LPK & Mil Spec Stock Buffer Kit AIM Sports Inc AR5CUB11: Complete AR Rifle Kit Mid-Length 300 Blk 16in Black Large AR5CUB11 Black Large
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