Работа со списком в цикле

n = False
weapons = ["Browning M1919", "CB-98", "F-1", "Pak-36", "M2"]
weapons2 = ["Pak-40""F-1", "M2", "CB-98", "Desert Eagle", "Browning M1919"]
print(weapons)
print(weapons2)
for i in range(len(weapons2)):
    n = False
    for j in range(len(weapons)):
        if weapons[j] == weapons2[i]:
            n = True
            break
    if n == False:
        if i > 0:
            for g in range(len(weapons)):
                if weapons[g] == weapons2[i-1]:
                   weapons.insert(g+1, weapons2[i])
                   break
            weapons2.pop(i)
        if i == 0:
            weapons.insert(0, weapons2[i])
            weapons2.pop(i)
print(weapons)
print(weapons2)

weapons = ["Browning M1919", "CB-98", "F-1", "Pak-36", "M2"]
weapons2 = ["Pak-40""F-1", "M2", "CB-98", "Desert Eagle", "Browning M1919"]
print(weapons)
print(weapons2)
for elem in set(weapons2)-set(weapons):
    i = weapons2.index(elem)
    if i>0:
        try:
            i = weapons.index(weapons2[i-1])
        except ValueError:
            weapons.append(elem)
        else:
            weapons.insert(i+1, elem)
    else:
        weapons.append(elem)
    weapons2.remove(elem)
print(weapons)
print(weapons2)