Bilson Arms BA-15FC 300 Blackout 12.5in Forward Complete Upper Assembly Pistol Length 1-7 Twist 5/8-24 TPI Sniper Green/Grey
$1,144.00 at OpticsPlanet
In stock Sale
Mk109 Mod 2-M 300 AAC Blackout 9.75" Bbl Complete Upper
Primary Weapons Systems · Upper Receiver
No ratings yetBest price
$1,299.95at Brownells
Out of stock checked Oct 23, 2026
In stock now instead
- Bilson Arms BA-15FC 300 Blackout 12.5in Forward Complete Upper … $1,144.00at OpticsPlanet
- Patriot Ordnance Factory P415 Edge 10.5" Complete Upper .300 AA… $1,093.19at Kentucky Gun Co
- Patriot Ordnance Factory Renegade Plus 10.5" Complete Upper .30… $1,053.50at Kentucky Gun Co
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| Brownells | $1,299.95checked Oct 23, 2026 | Out of stock | Buy at Brownells |
Prices and availability change often, so confirm on the store's site before you buy. We may earn a commission from these links.
Similar upper receivers in stock
This part is out of stock at every store we track. These similar upper receivers are in stock, with today's prices.
Patriot Ordnance Factory P415 Edge 10.5" Complete Upper .300 AAC Blackout, Black
$1,093.19 at Kentucky Gun Co · 7 stores
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Patriot Ordnance Factory Renegade Plus 10.5" Complete Upper .300 AAC Blackout 1:7, Black
$1,053.50 at Kentucky Gun Co · 6 stores
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Brn-180 Gen 3 Upper Receiver, 9" Bbl, .300 Blackout, Black
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APF Armory .300 AAC Blackout Pistol 2.0 Complete Upper Receiver Armor Black
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300BLK 8.7" Model 1 BLK Complete Upper Receiver Black
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Price history
Dashed line = out of stock. Tracking since Sep 28, 2026.
Show the prices as a table
| Store | Latest | Lowest | Highest |
|---|---|---|---|
| Brownells | $1,299.95 | $1,299.95 | $1,299.95 |
Since Sep 28, 2026.
About this part
The Mk109 Mod 2-M 300 AAC Blackout 9.75" Bbl Complete Upper is an AR-15 complete upper receiver from Primary Weapons Systems. One store lists it, Brownells at $1,299.95.
Fits and works with
- Caliber
- 300 Blackout · Shop matching ammo
- Bolt
- Standard AR-15 (5.56 / 300 BLK / .350 Legend) · Bolt carrier groups
- Barrel length
- 9.75" · Handguards
Specifications
- Manufacturer
- Primary Weapons Systems
- Type
- Complete
- Platform
- AR-15
- Caliber
- 300 Blackout
From the manufacturer
MK109 MOD 2-M 300 AAC Blackout Complete Upper SPECIFICATIONS: Operating System: PWS Long Stroke Piston System, 3 setting Adjustable Gas Regulator Caliber: .300BLK Gas System Length: Pistol Barrel Length: 9.75" Barrel Twist Rate: 1:8 Muzzle Velocity: 2264 fps Muzzle Device: PWS Triad 30 Upper Receiver: PWS Proprietary Piston Upper, 7075-T651 Hard coat anodize, per Mil 8625 Type lll Class 2 Handguard: PWS PicLok(TM) 8.9" Handguard (1.7" width, 2.25" height) Charging Handle: Radian Raptor(TM) Ambidextrous Charging Handle Mfg: Primary Weapons
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