Two air rifles, 18 deactivated assault rifles and power tools were some of the items stolen from a pre-fabricated building in Beccles at the weekend.
The incident happened between 7pm on Saturday and 10am yesterday at a building at The Quay.
The suspect or suspects broke into a safe containing the weapons - L126A1 Enfield assault rifles with a black barrel and green handle and black and brown air rifles.
A pressure washer, Bosh power drill and jigsaw, a Dewalt drill, four hand-held GPS map devices, five Motorola VHF radios, a quantity of cash, wetsuits, three Benq projectors, desktop computer and printer and five Asus laptops were also taken.
Police are asking anyone with information to cal PC Benjamin Alder at Suffolk Police by dialling 101, quoting crime BE/15/673.
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