If you go with the 1301 go ahead and pick up some o-rings for maintenance.

To me the biggest flaw in the M4 is the lack of appropriate stock options. I have an LE model and I DESPISE the stock. It absolutely beats my cheekbone to pieces. I ordered a field stock and if course it has a loP appropriate foe a Wookiee. I had to hack mine down and fill it with marine epoxy so I could attach a new butrpad….a serious pita. The beretta has an excellent length stock from the factory.

That being said, the M4 is wan absolute beast. It runs crappy leaky buckshot, birdshot, whatever garbage you want. And pretty much every critical part is metal and overbuilt. Definitely the ultimate doomshotty