# SBIR / STTR #DON27BZ02-NV024

SBIR research for robotic ammunition handling in MK 45 Mod 4 gun magazines

**Buyer:** ONR
**Posted:** November 04, 2026
**Respond By:** January 06, 2027
**Identifier:** DON27BZ02-NV024
**NAICS:** 541715, 541330

The Department of the Navy is seeking SBIR research to develop robotic ammunition handling for the MK 45 Mod 4 gun magazine.
- **Government buyer:** Department of the Navy, Office of Naval Research (ONR); the technical topic is for U.S. Navy DDG 51-class ships.
- **Procurement:** Research and development of a zero-retrofit robotic solution for handling 5-inch projectiles and propelling charges in confined magazine spaces. No production quantity, part number, named OEM, or vendor is specified.
- **Technical requirements:** Handle 70-pound projectiles and propelling charges; pass through 24-inch aisles; operate in Sea State 5; sustain at least 6 rounds per minute, with 12 rounds per minute as the objective; and operate for 2 hours with battery swaps taking less than 60 seconds.
- **Safety and hardening:** Address MIL-STD-461 electromagnetic compatibility, MIL-S-901D shock requirements, and NAVSEA OP 4 ordnance safety requirements.
- **Work progression:** Phase I covers robotic concept development, design trade studies, and simulation; Phase II covers prototype fabrication and testing with a magazine mockup and motion simulator; Phase III covers ruggedization and integration demonstrations alongside a functional MK 45 Mod 4 gun mount.
- **Other notable requirement:** The solicitation specifies CMMC Level 2 (Self).

### Description

This SBIR Phase I topic seeks proposals for zero-retrofit robotic ammunition handling for the MK 45 Mod 4, 5-inch gun magazine. It is issued by the Department of the Navy, with ONR listed as the command. The topic is in pre-release, Release 2, under the DoW 2027 SBIR BAA. Responses are due February 5, 2027, and the source lists a CMMC Level 2 (Self) requirement.

[View original listing](https://www.dodsbirsttr.mil/topics-app/)