GunClaims
Weekly firearms and ammunition patent grants.
Dec 30, 2025

USRE050717 - Barrier for absorbing live fire ammunition and uses thereof

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This disclosure is directed to an improved ballistic concrete barrier and methods of using the barrier for training with weapons using live ammunition or grenades or other fragmentation devices.

The patent describes a ballistic concrete barrier designed to absorb live fire ammunition, specifically tested against M855 rounds from an M16A2 rifle. The method for creating this barrier involves specific proportions of materials, ensuring it can effectively stop bullets with minimal penetration.

Claim 1

1 . A method for creating a bullet absorbing structural component made from ballistic concrete, the method comprising: the bullet absorbing structural component comprising: (i) about 1 part by mass Portland cement; (ii) about 0.5 to 1.5 part by mass fine aggregate; (iii) about 0.005 to 0.15 part by mass fiber; (iv) about 0.005 to 0.05 part by mass calcium phosphate; (v) about 0.005 to 0.05 part by mass aluminum hydroxide; and (vi) about 0.0005 to 0.05 part by mass air entrainment additive; such that the bullet absorbing structural component is capable of stopping a live-fire test of an M855 round with a bullet fired from an M16A2 rifle at a distance of 82-ft with a penetration depth of between 1 and 5 inches as measured to a back of the bullet from a point of bullet entry on the bullet absorbing structural component. the bullet absorbing structural component comprising: (i) about 1 part by mass Portland cement; (ii) about 0.5 to 1.5 part by mass fine aggregate; (iii) about 0.005 to 0.15 part by mass fiber; (iv) about 0.005 to 0.05 part by mass calcium phosphate; (v) about 0.005 to 0.05 part by mass aluminum hydroxide; and (vi) about 0.0005 to 0.05 part by mass air entrainment additive; such that the bullet absorbing structural component is capable of stopping a live-fire test of an M855 round with a bullet fired from an M16A2 rifle at a distance of 82-ft with a penetration depth of between 1 and 5 inches as measured to a back of the bullet from a point of bullet entry on the bullet absorbing structural component.

Google Patents

https://patents.google.com/patent/USRE050717

USPTO PDF

https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/RE050717