The cap with the name of one of the structures of Russian law enforcement agencies. Use operatives during detention, training and international competitions and just for fun =)
As you know from Warhammer 40K Pathetic space Marines live longer. You can see a lot of photos, when real operators use only operative cap during operation, when another operators use heavy helmets and bodyarmor. May be same rule works here?
Russia

We present to you the products of Russian companies and factories ranging from small workshops to large factories. This can be a massive defense orders, warehouse surplus since Soviet times, small exclusive supply.
However, all Russian goods unites several unique features. This legendary simplicity and reliability comparable with AK47.
The massive use of simple, sometimes rough but incredibly practical materials is a significant feature of the production of the USSR. Russian production in the best extent inherited the experience, but fully supplementing it with the most advanced Western technologies of the new century.
So meet flavor of Russian manufacturers, you will not be difficult to feel the charm of this enchanting Russian things.