Spike's TacticalAll Spike's Tactical upper receivers

Spike's Tactical .300 Black Complete AR-15 Upper With Front Sight Base - 16"

Spike's Tactical .300 Blk Complete Ar-15 Upper With Front Sight Base - 16" - Upper Receiver for AR-15 - view 1
Spike's Tactical .300 Blk Complete Ar-15 Upper With Front Sight Base - 16" - Upper Receiver for AR-15 - view 2
Spike's Tactical .300 Blk Complete Ar-15 Upper With Front Sight Base - 16" - Upper Receiver for AR-15 - view 3
Spike's Tactical .300 Blk Complete Ar-15 Upper With Front Sight Base - 16" - Upper Receiver for AR-15 - view 4
Spike's Tactical .300 Blk Complete Ar-15 Upper With Front Sight Base - 16" - Upper Receiver for AR-15 - view 5
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Spike's Tactical

Overview

The Spike's Tactical .300 Blk Complete AR-15 Upper is designed for builders looking for a ready-to-install upper that delivers reliable performance in the popular 300 Blackout caliber. With a 16-inch barrel and a 1:7 twist rate, this upper is optimized for stabilizing a wide range of bullet weights, making it versatile for various shooting scenarios. The carbine-length gas system ensures consistent cycling and reliability in semi-automatic configurations. This upper is commonly found in builds focused on the 300 Blackout caliber, making it an excellent choice for those wanting to maximize the potential of this cartridge.

Specifications

MPNSTU3025-M4S
Barrel Length16
PlatformAR-15
AssemblyComplete
Twist Rate1:7
Caliber300 Blackout
Gas System LengthCarbine
ColorBlack

Available Merchants(1)

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$693
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Build history on GunPartPicker

Builders on GunPartPicker first added the Spike's Tactical .300 Black Complete AR-15 Upper With Front Sight Base - 16" to a build in February 2026.

Today the one retailer we track has it in stock. Buying today, the lowest price is $693 at Primary Arms.

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Frequently Built With

The part most often added in each category by the 5 builds that include this one

Aero Precision Stripped M4E1 AR-15 Lower Receiver - Special Edition - Freedom

Aero Precision Stripped M4E1 AR-15 Lower Receiver - Special Edition - Freedom

Lower Receiver$155 · out of stockin 1 build
Rosco Manufacturing Bloodline 300 Blackout AR-15 Barrel Heavy Pistol - 10.5"

Rosco Manufacturing Bloodline 300 Blackout AR-15 Barrel Heavy Pistol - 10.5"

Barrel$121in 2 builds
PSA 5.56 Premium Full Auto Bolt Carrier Group with Logo - 8779

PSA 5.56 Premium Full Auto Bolt Carrier Group with Logo - 8779

Bolt Carrier Group$120in 1 build
Aero Precision AR-15 Breach Charging Handle Ambidextrous Small Levers

Aero Precision AR-15 Breach Charging Handle Ambidextrous Small Levers

Charging Handle$69 · out of stockin 1 build
Magpul M-LOK AFG Angled Foregrip - Black

Magpul M-LOK AFG Angled Foregrip - Black

Foregrip$16in 1 build
Franklin Armory BFSIII AR-S1 Binary Trigger - 5645A

Franklin Armory BFSIII AR-S1 Binary Trigger - 5645A

Trigger$250 · out of stockin 1 build

Builds Featuring This Part

See all 2 →

Builds in the community that include the Spike's Tactical .300 Blk Complete Ar-15 Upper With Front Sight Base - 16"

BuildPartsTotal
Vltor 30" build build
Vltor 30" build		18$1772.11
KAC 16" 300 blackout build
KAC 16" 300 blackout		14$12845.16

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