Arms deal should not be made with Russia till their active involvement in Syrian war has ended. Giving lucrative deals to Russia is simply encouraging and rewarding bad behavior. I would recommend going for Chinese arms instead as they are trying to be as neutral as possible in Syria and not directly involved like Russia. In a few years, China will have everything Russia can produce and more.
Sunni Muslim nations from Indonesia, Pakistan, Bangladesh, GCC and Turkey are having increasing defense cooperation with China. Russia is mainly with majority Shia nations like Iran, Iraq etc. The only exception is Algeria, a cold war relic.
Russia is energy rich, so they can afford to not care about concerns of Mid-east oil source nations and pursue their anti-Sunni geopolitics more freely. May be they want revenge for the Chechnya and Afghanistan J!had. China is not energy rich, so they are dependent on both Shia and Sunni Mid-east nations for energy. So they will always be a more reliable supplier, because of this energy dependence, no bitter history and also because they are big arms suppliers for other Sunni Muslim nations as mentioned above.
So my recommendation, dump Russia and go with China. Yes, some Chinese defense tech is still not as mature as Russia, but if it is good for Chinese Armed forces, it is good enough for Egypt. And I am keeping my fingers crossed that Chinese tech will surpass Russian tech in 10-15 years.
China replaces UK to join top 5 global arms exporters - People's Daily Online