Project Grayburn

Beretta Defence Technologies (BDT) have announced that they will be putting forward two rifles for consideration; the Beretta New Assault Rifle Platform, an evolved version of the AR-15 rifle, and the Sako M23, also based on the AR-15. Both are currently chambered for the 5.56×45mm NATO ammunition. BDT already has a facility for weapons testing and manufacturing in Lincolnshire.^[4]

SIG Sauer have also declared an intention to submit designs; possibly the 5.56mm SIG MCX or the 6.8mm M7. A British subsidiary of SIG was established in 2023 in association with Accuracy International.^[5]

Heckler & Koch, who upgraded and now service the current SA80 family, have suggested that they might submit the HK416 and the HK433, both in 5.56mm calibre. The HK416 is already in service with the US, Germany, France and Norway. The company has a facility in the United Kingdom to support the SA80, which could be repurposed to manufacture a future rifle.^[6]

Other possible contenders may be the CZ BREN, FN SCAR or KS-1 rifles.^[7]

SSS Defence announced its "firm decision" to bid in the competition on 21 February 2026.^[8][9]

In a written answer to a question in the House of Commons of the United Kingdom on 12 May 2025, Maria Eagle, the Minister of State for Defence Procurement and Industry, stated that Project Grayburn was "currently in the concept phase" and was expected to enter the "assessment phase" in 2026.^[10]

In January 2026, the Ministry of Defence issued a "pipeline notice" to industry, setting out the requirements for the project. The intention is for five variants of a common platform:

• Standard dismounted close combat rifle (to replace the L85A3)
• Short dismounted close combat variant
• Personal Defence Weapon (to replace the L22 Carbine)
• Generalist rifle (to replace the L85A2)
• Cadet rifle (to replace the L98 Cadet General Purpose Rifle)

The weapon must be produced in the United Kingdom, create skilled employment and be exportable. There should be a long-term relationship with the supplier, covering delivery, support and development. The weapon must be reliable and operable in a wide range of climatic conditions. Daylight optical sights are required, with the capability to rapidly accept night-vision devices.^[11] A requirement that the weapon should be capable of defeating "current and emerging" body armour might indicate that a move to a larger calibre than the current 5.56mm round is being contemplated. Additionally, "signature reduction technology" is required for some variants, perhaps a similar suppressor to that used on the KS-1. The contract is expected to run from 1 April 2028 to 31 March 2045.^[12]