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20% Spartan Block
In stock — ships from Greenville, SC
Designed for use with all Clear Ballistics gel products
18x8x8 Spartan block for large caliber testing
Choose Gel Formulation
10% — FBI BB Calibration Specs
Standard density. Best for handguns, pistols, and standard velocity rounds.
20% — NATO BB Calibration Specs
High density. Best for rifles, high-velocity rounds, and military applications.
$107.99 $119.99
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Made in USA
Gel Compatible
Durable Build
Fast Ship
Product Details
20% Spartan Block
Larger shooting face of 64 square inches with larger expansion zones. Perfect for terminal ballistics testing all calibers where projectile penetrations are less than 18 inches. Meets NATO ballistics testing protocol 100%.
Compatible with All CB Gels
Durable Construction
Made in USA
UPC: 852844007161
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Product FAQ
Still have a question?
Clear answers on calibration, reuse, storage, and applications. If you don't find what you need, contact us.
All Clear Ballistics accessories are designed and tested with our 10% and 20% synthetic ballistic gel products.
Accessories may be returned within 30 days in original, unused condition. Contact us at info@clearballistics.com to initiate a return.
Yes. Contact us or request a quote for volume pricing on accessories and gear.
Most accessories ship within 1–2 business days from Greenville, SC. Standard ground delivery is 3–7 business days.