When the L115A3 Long Range Rifle was only 6 years into its life cycle the British Ministry of Defence (MOD) recognized the improved capabilities of the AX series rifles in regard to special forces use. The AX series new chassis system provided more flexibility to utilize (future) low light and day light aiming optics, laser designators, and other accessories without the need for custom made mounting interface kits. The right folding AX series chassis system was also more compact in the folded configuration making it more portable and concealable, and featured a pistol grip. On request of the MOD Accuracy International explored the possibility of updating the L115A3 Long Range Rifle to the AX series chassis system, to produce a rifle that is a hybrid of AWM and AX features. The AX enhancements were well received by the MOD and British snipers, and an update programme was launched thus producing the L115A4. The L115A4 can easily be mistaken for a new AX series rifle. The Schmidt & Bender 5-25×56 mm PM II LP/MILITARY MKII 5-25×56 as well as the suppressor, bipod and several other accessories from the L115A3 were reused in the L115A4 resulting in significant cost savings. Along with the rifle updates, the L115A4 includes a new deployment case, maintenance kit, and other accessories.