Enfield No4 GROOVED Rear Handguard

[Roger Payne]

The round 'button' cocking pieces were standard on No4 Trials rifles & also on early run of production rifles. If yours is later production it must just have been fitted as a replacement at some point. With the SMLE, the slab sided cocking piece was approved (IIRC) mid way through WW1, so both types are quite commonly encountered.

Hope this helps.