No uppers or lowers. No kits to build a firearm. We do not know if parts are interchangeable. It is always best to only buy parts that are specifically for your gun.
Help me identify this rifle please. : r/guns
Lee–Enfield, Military Wiki
Reviving An Enfield: RTI's Imported No. 1, Mk III
303 Enfield Stock FOR SALE! - PicClick
Britain's Lee Enfield No 4 Rifle - History By Cammack
Lee Enfield No. 4(T) Sniper Rifle - Firearms News
Lee Enfield SMLE No. MK4 303 British Rifle rifle parts, stock and bolt
Old School: No. 4 Mk. 2 Enfield Rifle
British 303 Enfield Rifle FOR SALE! - PicClick
Irish Contract' Lee-Enfield Mk. 2 Rifle - RifleShooter
Product review: Boyds Field Design stock for 303 SMLE – The Gun Rack
303 British Enfield Parts FOR SALE! - PicClick
Lee Enfield: full disassembly & assembly
SMLE No.1 Mk.3 Stock & Magazine Parts