Originally Posted by
Geezer
The classic era Dianas all have good iron sights. As said above, the late 60s onward ones have really usable "iron" sights. On the better models, usually an alloy front with interchangeable elements and a plastic rear with click adjustments and a choice of four notches (square, which I always use, U, and - from memory, mine are locked up - two versions of a V, or a V and shallow U).
The earlier up-market Dianas have great rear sights, which can be converted to peeps with the right add-ons and moved to the rear sight rail. The sight radius on opens with the 50 is about perfect for shooters with OK eyesight. The front sights vary from sub-optimal (but period charming) beads on tapering post to the more target-oriented models that offer a quickly changeable range of four blades included in the unit. Considering their cost (lots were made), they are a great buy. You can get a great 50s model 50 for £200. Or less.
All those high-end 50s German rifles were set up for the nascent sport of 10M match. So their open sights are a cut above most British equivalents, which were set up for farmyard pests, let alone the American multi-pump and CO2 ones, which are frankly crude, no better than those on a Webley Mk1 pistol.