The L42A1 was the very last of the British Lee Enfield rifles and it was developed in the late 1960s to replace the No. 4 Mk1 (T) rifles of the WWII era.
Desirable British Enfield L42a1 Sniper Rifle Rig
Deactivated Lee Enfield no.4 t Sniper Rifle
Lee–Enfield - Wikipedia
Lee Enfield L42A1
History Of Britain's L42A1 Sniper Rifle: Full Review - RifleShooter
Lee-Enfield L42A1 Sniper Rifle with image intensifying IWS- ZOOM & ROTATE Hi-Res imagery
LEE ENFIELD NO. 4 (T) 303 BRITISH SNIPER RIFLE 1944
Lee Enfield No4 (T) L42A1 Sniper Cheek Piece BEECH Copied from an original REPRO
Did the Lee-Enfield rifle live on in the British Army as a sniper rifle as late as the 1980s? - Quora
Ares Airsoft Classic Line Lee Enfield L42A1 with Scope & Mount
Upgraded ARES L42A1 Airsoft Springer Rifle with No.32 MK1 Scope