Spike's Tactical ST-15 Gadsden "Don't Tread On Me" .300 AAC Blackout AR-15, 16" Threaded Barrel with A2 Flash Hider, FDE Furniture, Sightmark Ultra Shot R-Spec Red/Green Reflex Sight
This Spike's Tactical ST-15 Gadsden "Don't Tread On Me" edition is a factory-engraved .300 AAC Blackout AR-platform rifle configured with a 16-inch threaded barrel, carbine-length gas system, and FDE furniture. It comes outfitted with a Sightmark Ultra Shot R-Spec multi-reticle reflex sight with selectable red/green illumination and includes a .300 BLK-specific 20-round magazine. The lower features DTOM-prefix serial marking, the Gadsden snake and slogan, and novelty selector legends, with additional engraving noting Circle PO Ranch, LLC in Fulshear, Texas.
Condition
Overall Condition: Excellent condition, showing only faint signs of any prior use or handling.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: There are only light signs of prior use. The firearm presents in excellent condition, and the bore is clean and shiny.
What's Included
- Case: Rock River Arms hard case
- Optic: Sightmark Ultra Shot R-Spec multi-reticle reflex sight
- Sights: Flip-up rear sight (installed)
- Grip: Magpul RVG vertical foregrip (installed)
- Sling: QD sling swivel (installed on handguard)
- Magazines Included: 1x 20rd mag (.300 BLK-specific polymer magazine marked 7.62x35/300 Blackout)
This ST-15 is the Gadsden "Don't Tread On Me" series with factory engraving on the lower, including the coiled snake and slogan, plus novelty selector legends. The lower also bears "CIRCLE PO RANCH, LLC, Fulshear, Texas" engraving and a DTOM-prefix serial, adding distinctive identification to this edition.
Chambered in .300 AAC Blackout (7.62x35mm), it runs a direct-impingement, carbine-length gas system with a fixed A2 front sight gas block. The 16-inch barrel is threaded and fitted with an A2 birdcage flash hider. The upper is a flat-top with a Picatinny rail, forward assist, ejection-port cover, and shell deflector.
The rifle wears FDE furniture: a Magpul MOE carbine handguard and an adjustable polymer stock. Length of pull is adjustable from 10.5 to 14 inches. A black A2-type pistol grip is installed, along with a Magpul RVG vertical foregrip and a QD sling swivel mounted on the handguard.
Sighting equipment includes a fixed A2 front sight and a flip-up polymer rear sight. An installed Sightmark Multi-Reticle Reflex Sight — the Ultra Shot R-Spec — provides selectable red or green reticle illumination with multiple reticle patterns for quick target acquisition on the flat-top rail.
Receiver markings include "ST15 CAL – MULTI SPIKE'S TACTICAL APOPKA, FL U.S.A." on the right and ".300 BLACKOUT AAC AMMO ONLY" with the Gadsden snake and slogan on the left. The finish is matte black, and the Spike's spider logo is visible on the bolt carrier. Stated capacity is 20+1, and a .300 BLK-specific 20-round polymer magazine is included.