Somali pirates are notorious, but when it comes to their fighting capability, only the word "rubbish" can describe them. Gao Yang and his team had every reason not to take those barefooted pirates wielding AK47s seriously.
In terms of weapon selection, Gao Yang and his team basically stuck to their old ways. As they might need long-range precision firing at sea, Cui Bo would still use a large-caliber sniper rifle. Whether it was for anti-matériel or anti-personnel use, it would be handy. Although his Barrett M82 had not been modified yet, Cui Bo only needed to bring his TAC50 with him. After all, dealing with Somali pirates did not require a very high rate of fire.