Spike's Tactical .300 Black Complete AR-15 Upper With Front Sight Base - 16"
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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
Spike's Tactical .300 Black Complete AR-15 Upper With Front Sight Base - 16"
Available Merchants(1)
Prices checked
Stock Alert
October 2026 on GunPartPicker
Spike's Tactical .300 Black Complete AR-15 Upper With Front Sight Base - 16" ranked #360 of the 844 upper receivers builders added on GunPartPicker in October 2026. Builders have added it to their builds on GunPartPicker. Since April 2026, it ranks #1238 of the 2,061 upper receivers builders have added.
Today the one retailer we track is out of stock. Listed prices start at $693 at Primary Arms for when it comes back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
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Frequently Built With
The part most often added in each category by the builds that include this one
PSA JAKL 300 Blackout Complete Lower MOE EPT, Flat Dark Earth
Rosco Manufacturing Bloodline 300 Blackout AR-15 Barrel Heavy Pistol - 10.5"
Radian Raptor Charging Handle & Talon Safety Selector Combo - OD Green
PSA 5.56 Premium Full Auto Bolt Carrier Group with Logo - 8779
Franklin Armory BFSIII AR-S1 Binary Trigger - 5645A
Magpul M-LOK AFG Angled Foregrip - Black
Builds Featuring This Part
See all builds →Builds in the community that include the Spike's Tactical .300 Blk Complete Ar-15 Upper With Front Sight Base - 16"
| Build | Parts | Total |
|---|---|---|
 | 18 | $1792.23 |
| 14 | $9406.51 |
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