Allen Control Systems (ACS) is a defense robotics company building Bullfrog, an autonomous robotic weapon station that counters drones using conventional firearms rather than expensive missiles or lasers. Bullfrog combines AI, computer vision, and proprietary motion-control systems to detect, track, and precisely engage fast-moving aerial threats, transforming legacy and modern weapons like the M240 machine gun into accurate counter-UAS systems. By relying on cheap standard ammunition, ACS aims to close the cost-asymmetry gap that makes defending against mass-produced drones expensive. The system is designed for passive operation and compatibility with widely fielded weapons. Headquartered in Austin, Texas, with offices in Alexandria, Virginia and Huntsville, Alabama, ACS raised a $30M Series A in March 2025 led by Craft Ventures.
Allen Control Systems
ActiveBullfrog turns standard weapons into AI counter-drone gun systems
Total raised
$30M
1 round
Stage
Series A
Mar 2025
Team
11-50
since 2023
Pricing
Enterprise
Founded
2023
Austin, United States
Agent-ready
—
Bullfrog autonomous robotic weapon station
AI computer-vision drone tracking and targeting
Engages drones with standard ammunition
Compatible with legacy weapons (e.g., M240)
Proprietary precision motion-control systems
Passive, low-signature operation mode
Cost-asymmetric counter-UAS defense
Modular integration onto fielded platforms
10/100
Early
MCP server
Public API
Webhooks
OAuth 2.0
SDKs
No public agent surfaces detected yet.
Mar 2025 Series A $30M ● Craft Ventures
Capital network
$30M raised ·3 backers·10 network links
- Backers3
- Shared portfoliocompanies these backers also fund
- Extended networkfunds that co-invest alongside them
Castelion
Mass-producing affordable hypersonic weapons for defense
Defense AIAI Aerospace
Saronic Technologies
Redefining maritime superiority with the most advanced and capable autonomous vessels in the maritime domain.
Defense AIAI Robotics
Anduril Drones
Autonomous defense drones and counter-UAS systems.
Defense AIAI Aerospace
CHAOS Industries
Distributed radar and sensing systems for counter-drone and air domain awareness
Defense AIAI Drones
Blue Water Autonomy
Building the world's most capable fully autonomous warships
Defense AIAI Robotics
HavocAI
Collaborative maritime autonomy for fleets of uncrewed surface vessels
Defense AIAI Robotics
- What is Bullfrog?
- Bullfrog is ACS's autonomous robotic weapon station that uses AI and computer vision to shoot down drones with standard ammunition.
- Why use bullets instead of lasers?
- Standard ammunition is far cheaper than missiles or lasers, addressing the cost asymmetry of defending against mass drones.
- How much has ACS raised?
- ACS raised a $30M Series A in March 2025 led by Craft Ventures, with Inspired Capital and Rally Ventures.
- Where is ACS based?
- Austin, Texas, with offices in Alexandria, Virginia and Huntsville, Alabama.
Discussion
Sign in to join the discussion.
Sign inExplore more around Allen Control Systems
Contextual paths to related AI startups, deals and rankings.