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

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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Builds Featuring This Part

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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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