300 Blackout Pistol Upper Assemblies
300 Blackout Pistol Upper Assemblies
Achieve superior shooting results by boosting the performance of your rifle with Moriarti Armaments' 300 Blackout Upper series. With a variety of configurations available, whether you prefer a pistol or carbine length, our 300 BLK uppers are designed to deliver unparalleled precision and reliability.
Can I switch between 5.56 and 300 Blackout?
Yes. Because both cartridges use the same AR-15 lower receiver, you can switch calibers by changing the complete upper receiver. Always verify the correct ammunition is used with the installed upper to avoid potentially dangerous caliber mix-ups.
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AR-15 300 Blackout 7.5" Pistol Shark Upper Assembly /Mlok
AR-15 300 Blackout 7.5" Pistol Shark Upper Assembly /Mlok Features:1. Barrel: The AR-15 300 Blackout..
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AR-15 .300 Blackout 10.5" Suppressor Ready Upper Assembly – 12" M-LOK
The Moriarti .300 AAC Blackout 10.5" Suppressor Ready Upper Assembly is part of the Suppressor Ready..
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AR-15 300 AAC blackout 10.5" nitride classic mlok upper assembly / A2
AR-15 300 AAC blackout 10.5" classic mlok upper assembly is a perfect addition to your AR pistol. No..
-33%
AR-15 300 Blackout 10.5" Diamond Cut 10" M-LOK Upper Assembly / Slanted Muzzle / 1x7 Twist – Sniper Grey Cerakote Finish
Unlock superior performance and style with the AR-15 300 Blackout 10.5" Diamond Cut 10" M-LOK U..
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Moriarti AR-15 300 Blackout 10.5" Pistol Upper Assembly | 10" OD Green M-LOK | A2 Flash Hider
The Moriarti AR-15 300 Blackout 10.5" Pistol Upper Assembly is a premium, ready-to-install upper des..
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Moriarti AR-15 300 Blackout 10.5" Pistol Upper Assembly | MLOK | Shroud
Moriarti AR-15 300 Blackout 10.5" Pistol Upper Assembly | MLOK | Shroud | Precision EngineeringThe M..
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Moriarti AR-15 300 Blackout 10.5" Quad Upper – Nitro-Met with Socom Style Brake
Experience unparalleled shooting performance with the Moriarti AR-15 300 AAC Blackout 10.5" Upper As..
DD M4 UPPER 300BLK 10.3
The Daniel Defense — is a complete upper receiver in 300 Blackout with a 10.3" barrel. Key details ..
MAXIM PDX UPPER 300BLK 5.5
The Maxim Defense PDX is a complete upper receiver in 300 Blackout with a 5.5" barrel. Key details ..
MAXIM PDX UPPER 300BLK 5.5
The Maxim Defense PDX is a complete upper receiver in 300 Blackout with a 5.5" barrel. Key details ..
MCX-SPEAR LT 9
The SIG Sauer MCX-Spear LT is a complete upper receiver in 300 Blackout with a 9" barrel. Key detai..
MCX-SPEAR LT 9
The SIG Sauer MCX-Spear LT is a complete upper receiver in 300 Blackout with a 9" barrel. Key detai..
NOVESKE CHAINSAW 300BLK 8
The Noveske Chainsaw is a complete upper receiver in 300 Blackout with an 8" barrel. Key details B..
NOVESKE N4 CH DIPLOMAT 300BLK 7.94
The Noveske N4 Diplomat is a complete upper receiver in 5.56 NATO with a 7.94" barrel. Key details ..
NOVESKE N4 DPLMT UPR RCV 300BLK 7.94
The Noveske N4 Diplomat is a complete upper receiver in 300BLK with a 7.94" barrel. Key details Br..
PWS MK109 MOD 1-M UPPER 300BLK 9.75
The Primary Weapons Systems MK109 MOD 1-M is a complete upper receiver in 300 Blackout with a 9.75" ..
PWS MK109 MOD 2-M UPPER 300BLK 9.75
The Primary Weapons Systems MK109 is a complete upper receiver in 300 Blackout with a 9.75" barrel. ..
RADICAL UPPR 300BLK 10.5
The Radical Firearms Assembly is a complete upper receiver in 300 Blackout with a 10.5" barrel. Key..
SIG MCX-RATTLER UPR 6.75
The SIG Sauer MCX-Rattler LT is a complete upper receiver in 300 Blackout with a 6.75" barrel. Key ..
SOLGW M4-L89 URG 8.5
The Sons of Liberty Gun Works M4-L89 Group is an upper receiver in .300BLK with an 8.5" barrel. Key..
AR-15 300 BLK 10.5" Walking Dead pistol upper assembly / Mlok
Includes:Premium Barrel: 10.5" 4150 CMV medium profile barrel with a hardened 26-32 RC stress-reliev..