Dimples or no dimples, a WASR-10 or any other AK is an 'AK VARIANT'. It is an AK because of the basic reliable design and function. Did the first AK-47 have dimples? or did it start with the milled and then the later stamped AKM's? Is a Galil, Maadi, Vector Arms or any other AK less of an AK just because it is not exactly like the original Russian AK-47, M, or whatever?. What are the 'correct dimple' sizes...I have seen all sorts. In fact, none of the AK's we no account hayseeds can legally use are capable of selective fire-does that mean all our AK's are not 'real' AK's? Of course not...they are semi-auto AK variants and all are different by degrees but all share the same basic Kalishnakov design and functionality-even the low-cap WASR-10, it is still an AK variant and is just fine as is. The same thing goes for accessories. If you want to be historically accurate, then you have to determine exactly which AK variant to research and still there will be differences.
I have a GP WASR-10 and it works great. Cleaned off the cosmo with mineral spirits and Hoppe's. Flushed out the firing pin, cleaned the barrel, trimmed off the disconnector tab, polished the FCG wear surfaces, added a BJ Buffer and Shepherd's crook replacement: all of about 1 1/2 hrs total without rushing. 30 rd hi-cap mags fit well with very little wobble, 5 rd hi-cap chinesse mags fit perfectly. From the first shot it has functioned perfectly, has stayed relatively clean, and hits at poa with shotgun accuracy-what I expected and as designed.
AK's are fun, reliable, sound cool, and can be used for hunting just as a slug shotgun...but they are ALL AK variants. So dimples or no dimples, hi-cap or low-cap, join the AK action and shoot some 7.62's. Nobody is going to look for dimples or drums when that WASR-10 goes off. Be good and be safe.