migrate "longarm bag" item

[dynst]

Summary

Content "Obsolete longarm bags"

Purpose of change

A longarm bag does not exist. The term "longarm bag" does not exist. The term looks like an awkward name coined in #42386 for its invention of a duffelbag intended to hold rifles without using the word "rifle." But in real life rifles are generally held in rifle cases (added a few months later in #43466). And no real duffelbag with that volume capacity has 1 extremely long length dimension like this item does (50L but 150 cm long?).

Describe the solution

Replace it with a duffelbag.

Describe alternatives you've considered

Testing

Additional context

The duffelbag is currently larger than the long_duffelbag ever was, though not with the same absurd length. #81101

#81553

[mahpell]

I... kind of disagree? There is no "longarm bag", but there is a "gunrunner pack" type of bag. It isn't 150 cm long, but it has the special scabbard for the fully assembled gun at the back, usually longer than the rest of the backpack. The stock is obviously sticking out of the scabbard, but still, this kind of bags is very real.

[dynst]

Unfortunately when I asked if anyone had seen longarm bags for sale all anyone came up with were basically rifle cases. #81101 (comment)

This looks so different it would make sense as a whole new (much smaller) item. https://eberlestock.com/products/gunrunner-pack

    Volume: 1,275 c.i. / 20.89L
    Weight: 3.95 lbs
    Dimensions:  25.5H x 8.25W x 8.5D
    Scabbard Dimensions 34" H x 7" W x 3" D
    Scabbard Volume: 400 c.i.

But fortunately, for now, a standard duffelbag already has a rifle-storing 'pocket' that allows storing an item as long as 100 cm added in #53162 (so, it didn't exist when long_duffelbag was designed).

[mahpell]

Yeah, I guess it can work. There are lots of different sizes and volumes, though:
https://eberlestock.com/products/x1-euro

Total Volume:
2100 c.i. (without scabbard) / 34.4L
Weight:
Camo - 6lb 3 oz. , Solid - 5lb 14 oz.
Dimensions main bag:
24"H x 12"W x 10"D

Some are even with a full-size scabbard that include stock:

https://eberlestock.com/products/phantom-sniper-pack

Volume:
2600 c.i. / 42.6L
Weight:
9lbs 6oz
Dimensions:
24.5H x 19W x 10.5W
Scabbard:
34"L x 10"W x 3"D, 26" circumference opening

I can see it as separate military-themed lineup of bags.