>take a proven LMG action like that of the BAR or Lewis gun

>>34848796
I'll take "What is a Remington model 8 for 500"

>>34848796

The AR would have still been lighter weight, allowing the solider to carry more ammo. Also the M14 is still in service.

>>34848796
>>reduce weight as you're not gonna use it as an LMG
how exactly would you accomplish this when aluminum or other light weight alloys were not in common use for manufacturing firearms at the time, besides the bolt carrier group needing to have a certain weight to function
>>modify it to fire from a closed bolt (easily done on both aforementioned actions)
that'd actually add weight to the gun probably

>"durr bro why didn't they just make guns lighter"
because they already made them as light as they possibly could without sacrificing accuracy or durability

File: Remington Model 8 with extra badassery.jpg (67KB, 1200x412px) Image search: [Google]

67KB, 1200x412px

>>34849527
The /K/ube smiles upon thee, anon.

*burns out your barrel in 1500 rounds*

>prohibitively expensive

>>34849527
That's not how Jeopardy categories work fucktard

>>34848796
.250 Savage does seem like a pretty decent midpoint. During the development of the AR15 there was actually an attempt to cock block 5.56 with a .25 caliber alternative.

>>34852299
I'll take "Guns already fucking thought up for OP's Post" for 500.
What is Remington Model 8.
Fixed and chixed

>>34852777
trips

>>34851135
Obviously OP meant that you can shave weight on an assault rifle. Skinnier barrels, less heavy duty receivers, stuff like that.
RPK receivers for example are made of thicker sheet steel than AK ones