Spikes Tactical ST15 5.56 NATO AR-15 Rifle - 16" - Primary Arms Demo Rifle

This used AR-15 spent its life as a Primary Arms demo and range rifle, built around a Spikes Tactical ST-15 lower and assembled with a genuinely upgraded parts list rather than a budget-grade component mix.

Features:

• Spikes Tactical ST-15 lower receiver with a Schmidt mil-spec trigger and lower parts kit
• 16-inch ALG 5.56 barrel with a 1:8 twist and midlength gas system, fitted with a Geissele gas block
• ALG 15-inch handguard, ALG muzzle brake, and a forged upper receiver
• Magpul UBR adjustable stock paired with a Spikes T2 buffer for tuned recoil impulse
• Rainier Arms front and rear back-up iron sights for a reliable co-witness or standalone zero
• M16-cut bolt carrier group with a hard chrome finish, cycled with a BCM Vltor Mod 4 charging handle

Because this rifle saw duty as an in-store demo gun, buyers should expect more round count and handling wear than a typical retail firearm, though the underlying build quality reflects genuinely well-regarded component brands rather than entry-level parts. The M16-cut, hard chrome bolt carrier group is a notable upgrade over a standard phosphate-finished BCG, offering smoother cycling and easier cleaning over the long term. This rifle ships without a magazine.

This is a pre-owned firearm sold in used, demo condition; exact wear and round count are not precisely documented, and standard factory warranty coverage may not apply to the aftermarket components used in this build. Contact us with any condition questions before ordering.