The L1A1 Self Loading Rifle (SLR) was the standard issue service rifle for the United Kingdom. The SLR is an Inch pattern FAL, this means that it was derived from the Canadian C1A1. It also means that the L1A1 is mostly not parts compatible with the more common metric FALs. notably this includes magazines. So that means let's say that the Brits are fighting a county that uses metric FALs, if they happen to capture a collection of metric FALs they wouldn't be able to use any of them. And to add confusion to the L1A1 SLR story the Aussies also adopted the inch pattern FAL as the L1A1 SLR… Fortunately the Australian SLRs are mostly the same with the exception of the handguard. My L1A1 SLRs here are really one base receiver with two furniture sets. You can choose between the boring but reliable polymer or the full wood furniture sets. In addition you also get the 30 round magazine from the L2A1 machine gun along with the standard issue 20 rounder. The weapon is fully rigged.