Catalyzes the transfer of succinyl-CoA to arginine to produce N(2)-succinylarginine. L-arginine + succinyl-CoA = CoA + H(+) + N(2)-succinyl-L-arginine Amino-acid degradation; L-arginine degradation via AST pathway; L-glutamate and succinate from L-arginine: step 1/5. Belongs to the arginine N-succinyltransferase family.