Alpha Drop-Tree System Bundle – 8 mm AR500 Spine with REACK X-BASE & 150 mm AR500 Paddle

Heavy-Duty Reactive Drop-Tree System for Handgun, Light Rifle & Shotgun Training

The Alpha Drop-Tree Bundle is SPI’s top-tier reactive drop-target system, engineered for shooters who demand maximum durability, reliable flipping performance, and smooth actuation.

Featuring a precision-cut 8 mm AR500 armour spine, a stable REACK X-BASE, and a single 150 mm AR500 flip paddle included, this complete bundle is designed for handguns, light rifles, and shotguns.

Unlike duelling trees, where paddles flip side-to-side, the Alpha Drop-Tree forces shooters to track downward. Each hit drops the paddle one position while flipping it to the opposite side, progressing through nine paddle stages before ejecting on the final shot. The larger 150 mm AR500 paddle provides a bigger hit zone, easier visual acquisition, and smoother flipping under higher-energy calibres.

Why Choose the Alpha Drop-Tree Bundle

✔ Complete Kit – Includes Alpha Drop-Tree (8 mm AR500 spine), REACK X-BASE, and 1 x 150 mm AR500 paddle
✔ 150 mm Paddle Included – Larger face improves accuracy and slows down aggressive flipping
✔ 8 mm AR500 Armour Spine – Built for maximum impact resistance and system longevity
✔ 9-Stage Drop & Flip System – Creates a dynamic and challenging shooting experience
✔ Forward-Leaning Design – Safely deflects bullet fragments downward
✔ Quick-Deploy REACK X-BASE – Collapsible stand with quick-release locking pins
✔ Cross-Compatible System – Accepts 100 mm & 150 mm paddles in AR500, AR450, or mild steel (sold separately)

Included 150 mm AR500 Paddle

• Material: 8 mm AR500 armour steel for unmatched durability

• Diameter: 150 mm round profile — bigger hit area for improved acquisition

• Precision-Cut Design: Provides balanced, smooth flipping action

• Weight Advantage: Heavier paddle mass reduces violent flipping for rifles & shotguns

• Tool-Free Installation: Quick drop-in fitting for fast swaps or replacements

⚠ Performance Notes:

• Rimfire calibres (.22LR, .22 Mag, .17 HMR) will not reliably actuate 8 mm paddles — use 6 mm AR450 or 6 mm mild steel paddles (sold separately).

• For light rifles (.223 / 5.56 / .300 BLK), the included 150 mm paddle offers smoother, more controlled performance.

Calibre Ratings & Safe Distances

(Alpha Drop-Tree Spine 8 mm AR500 + 150 mm AR500 Paddle)

Handgun Calibres (.22LR → .45 ACP)

• Angled (16°–20°+): 10 m+

• Vertical: 15 m+

Light Rifles (.223 Rem, 5.56 NATO, .300 BLK)

• Angled: 40 m+

• Vertical: 60 m+

Shotgun (.410, 12 ga – Bird & Buckshot)

• Angled: 25 m+

• Vertical: 30 m+

Velocity & Energy Ratings:

• Max Energy: 1,500 ft-lbs

• Max Velocity: 2,750 fps

• Min Velocity: 750 fps (for reliable flipping)

⚠ Important Notes:

• Not rated for magnum rifle calibres or extreme-velocity ammunition.

• Rounds under 1,100 fps may fail to actuate 8 mm paddles reliably.

• If flipping becomes too aggressive, increase distance or upgrade to 10 mm AR500 paddles (sold separately).

REACK X-BASE Included

A collapsible, quick-deploy stand designed for SPI’s modular reactive systems.

Features:

• Quick-release locking pins for fast assembly and takedown

• Locks the target spine at the optimal forward lean angle

• Stable, balanced platform engineered for smooth paddle operation

• Cross-compatible with SPI reactive systems:

  • DT-Cadet Duelling Tree

  • DT-Alpha Duelling Tree

  • Cadet Drop-Tree

  • Alpha Drop-Tree

What’s Included

• 1 x Alpha Drop-Tree Spine & Track Assembly (8 mm AR500)

• 1 x REACK X-BASE Stand (Collapsible, Quick-Deploy)

• 1 x 150 mm AR500 Flip Paddle (Included)

• 1 x AR500 Armour Face Plate

• All Required Assembly Hardware

📸 Photo Disclaimer: Images may show accessories for reference only.
This listing includes the Alpha Drop-Tree System with REACK X-BASE and 1 x 150 mm AR500 Paddle.
🇦🇺 Proudly Made in Gippsland, Victoria, Australia