Spike's Tactical 5.56 AR-15 Complete Upper Receiver Group - Quad Rail - 16"
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Spike's Tactical
Overview
The Spike's Tactical 5.56 AR-15 Complete Upper Receiver Group is designed for builders looking for a ready-to-install upper that delivers reliability and performance in a compact package. With a 16-inch barrel and a carbine-length gas system, this upper is optimized for 5.56 NATO ammunition, providing a quick follow-up shot capability due to its 1:7 twist rate, which stabilizes a wide range of bullet weights. This complete upper is often used in builds focused on tactical applications or general-purpose shooting, where versatility and ease of handling are key factors.
Specifications
Spike's Tactical 5.56 AR-15 Complete Upper Receiver Group - Quad Rail - 16"
Build history on GunPartPicker
Builders have been adding the Spike's Tactical 5.56 AR-15 Complete Upper Receiver Group - Quad Rail - 16" to their builds on GunPartPicker since February 2026. All time, it ranks #341 of the 1,578 upper receivers builders have added.
Availability is good: it was in stock at one retailer or another nearly every day in August 2026, but today only GritR Sports has it in stock. The best price crept up from $641.68 to $743.40 over August 2026. Buying today, the lowest price is $641.68 at GritR Sports, which matches the best price we saw in August.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 31 retailers
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