This thought occurred to me when I was using it earlier. Without a doubt it's the best gun in BF1, but when you looks at it stats here it could prove that this gun might be able to work if in BF3 or 4

Since it's a SMG we can assume it would be an Engineer PDW in BF4. As we recall from BF4, PDW's we're very poor and underused and took a series of updates before players started using them, some called them unusable at launch.

The Hellriegel registers a 700 RPM making it faster fire rate than the PP2000 and UMP-45, and same fire rate as the UMP-9, Groza-4, and CBJ-MS.

The Hellriegel's recoil pattern (going from left/up/right) is (.32/.28/.32) as we know players tend to favor guns with the same left and right recoil pattern because it leads to more predictability and controllability as compared to a gun like the Groza-4 which holds a (.15/.31/.24) pattern leaving it harder to manage as it will kick and drag to the right. If implemented into BF4, the Hellriegel would have the 3rd lowest up recoil (.28) leaving only the UMP-9 (.26) and PP2000 (.24) with lesser kick

All of this puts the Hellriegel in a position to compete with all other PDW's in BF4 yet I did not mention the huge advantage this gun serves over every gun in BF4, magazine size. At 60 rounds per mag it is unmatched in this category, leaving only the CBJ-MS and P90 relatively close with 51 per mag.

Lastly I want to mention the damage stats. The Hellriegel deals 23 max damage and starts a drop off at 12 meters. Only other weapons dealing higher max damage is the UMP-45 at 30 yet with a drop off at 8 meters (HR has higher fire rate, bigger mag, less recoil) MPX at 24.5 (HR has less recoil and bigger mag) PDW-R at 24, which also drops at 8 meters (HR might be outmatched by PDW-R, only having a higher mag size) AS VAL and Groza-4 at 27 yet drop off at 5 meters (HR has bigger mag and less recoil than both, better drop off as well)

Point being is I think a gun that was made in 1915 actually has a fighting chance at being involved in a modern battlefield game, as a matter of fact judging by these numbers it actually may be one of the better choices for PDW's in BF4