NO4 MK1 Bolt Head Catch Missing - Safe to Shoot?

[Hcompton79]

I can't imagine how having that catch missing on a No.4 MkI would cause any kind of safety issue as its only purpose is to prevent the bolt head from rotating out of the track when it gets to the end of travel. Worst case scenario would be that the bolt head flips up out of alignment if the bolt is operated too vigorously.

You will note that they did away with this catch anyway on the No.4 MkI* and simply put a cut out section in the bolt head rail.