你要这么理解，差生文具多，而王牌只需要必要的火力，不需要这些拆东墙补西墙的东西。
当然，你这个问题我觉得挺有趣，有空我找找。

查了一下，这其实不完全是“差生文具多”的事109自F型开始标准武器就改成了1*轴炮+2*同步机枪，有的飞行员觉得这是火力不足是退步（和E上2*翼炮+2*同步机枪相比），而有的觉得这是进步打起来更顺手了，这基本可以看作是“单位时间火力投掷”vs“火线视线结合集中+机动更灵活”两种侧重点的碰撞。
这两种观点都有理，所以根据实战需求，翼炮也会得到保留：比如加兰德自己的F-2就是加装了mgff翼炮的特供版；更为常见的就是mg151机炮吊舱了，这种改型可以说是很常见，所以无论是战绩10+的小强还是100左右的大王牌，肯定有不少都飞过。比如Anton Hackl（180+），Hermann Graf（200+）和Helmut Bennemann（90+）都飞过，照片比较难找，就找到Helmut Bennemann的：

On its return to Germany, the Stab/JG 3 was based at Mönchengladbach and I. /JG 3 did not go operational until June 1943. The move saw another improved fighter model introduced, the Bf 109G-6 Kanonenboote which was equipped with two 20mm cannons in underwing gondolas. This aircraft saw I./JG 3 become slatted as a ‘bomber-killer’ unit and undertook more training. Having extensive training meant the Gruppe shoot down large numbers of USAAF B-17 and B-24 bombers, while not incurring significant losses themselves. By late summer 1943 III./JG3 were also flying the Bf 109G-6 and Bf 109G-6/R6. In intense air battles in the air over Europ e with P-47s of the 352nd Fighter Group, JG 3 would suffer losses and Hpt. Wilhelm Lemke who had 131 kills was killed in combat in December 1943. The losses began to slowly mount in the end of 1943 and would rise in 1944 as USAAF and RAF tactics changed.
这是装备20MM炮的

这个挂翼下炮，我影响中巴黎好多年前就有这个讨论，还法国Prien的15mm吊舱炮，只是个套件选配，109在东线就有，Jobo西线109也有.190早期也有.
问题不是有没有，而是效果

不知道哈特曼有没有飞过带吊舱的

哈特曼被击落过多次，比他更NB的莫尔德斯也被击落过，不要过多解读.....
和武器装备关联也不多
德国空军的这些王牌出击次数，远远超过盟军或者苏军的平均数.按照德佬的勋章级别查下大多人挂的时候，不难得出，运气是，终有一天会被用完的！