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No. 108097 ID: b27d97
  Why have them? Why didn't they go with a regular telescopic bolt carrier or even something that has the spring overlapping with the the barrel?

https://www.youtube.com/watch?v=A5g2T8uZCTg
https://www.youtube.com/watch?v=7XtHikv7Zdw
Expand all images
>> No. 108099 ID: 9dcda2
File 154674306671.png - (869.62KB , 1855x1204 , disasm_2019_01_05_21_32_22_910.png )
108099
>>108097
No reason not to have a buffer tube, as the original AR-10 and AR-15 had full stocks and 20" barrels. A buffer tube was a perfectly good place to put a recoil spring. The floating buffer weights reduce bolt bounce, so that's an improvement over other designs. Also there's no operating rod, so you can't have it forward of the bolt like on a M1 Garand.

> spring overlapping with the the barrel

The heat from the barrel damages the spring. There have been a couple of guns on Forgotten Weapons that moved the spring from around the barrel to somewhere else.

Picture from World Of Guns: Gun Disassembly, available on steam.
>> No. 108100 ID: b27d97
>>108099
>No reason not to have a buffer tube, as the original AR-10 and AR-15 had full stocks and 20" barrels.

But they still have them now and have carbines with shorter barrels when they could have been benefiting from a folding stock.

>The heat from the barrel damages the spring.

Should be possible with a shroud or a part of the bolt carrier between the barrel and the spring
>> No. 108101 ID: 9dcda2
File 154674677220.png - (1.18MB , 1855x1204 , disasm_2019_01_05_21_54_41_207.png )
108101
> But they still have them now and have carbines with shorter barrels when they could have been benefiting from a folding stock.

Folding stocks are useful for paratroopers and people riding in vehicles, but collapsible stocks work pretty well too.

> Should be possible with a shroud or a part of the bolt carrier between the barrel and the spring

The AR bolt doesn't extend forward past the barrel extension. There's nothing forward of the bolt face that could pull on the bolt.
>> No. 108102 ID: 9dcda2
File 15467470502.jpg - (61.72KB , 700x700 , FP-MCS-RIFLE-CAL-700x700.jpg )
108102
There's a couple of solutions.

https://deadfootarms.com/products/dfa-modified-cycle-system-rifle-caliber-with-right-side-folding-stock-adaptor/
>> No. 108103 ID: 9dcda2
File 154674716913.jpg - (179.12KB , 2176x1498 , Honey-Badger-300BLK-5.jpg )
108103
https://www.liveqordie.com/products/honey-badger-by-q/
>> No. 108104 ID: 9dcda2
  >>108100
> should be possible with a shroud or a part of the bolt carrier between the barrel and the spring

The whole front end gets pretty hot.
>> No. 108105 ID: b27d97
>>108101
>The AR bolt doesn't extend forward past the barrel extension. There's nothing forward of the bolt face that could pull on the bolt.

Yeah, I know. You'd have to change the BCG to extend past the chamber and around the barrel instead of all the shit that goes backwards and into the buffer tube.
>> No. 108106 ID: bbee29
LR-300
>> No. 108107 ID: 9dcda2
  >>108106
Indeed. Forgot about the LR300.

https://www.thefirearmblog.com/blog/2011/10/03/para-usa-exits-rifle-market/
>> No. 108110 ID: c3b8cf
>>108107
or the Olympic Arms OA-93.
>> No. 108111 ID: e9cfb0
  I always thought the LR-300 seemed really cool, both in function and aesthetic. I think Todd Jarrett used one in competition for a while and there are videos of the dual-recoil spring system it uses. If memory serves, both springs are retained by tiny little clips that are a bitch to take down. When Allan Zitta designed it, I'm sure he took sturdiness into account on those tiny clips, but it's hard to argue with a much larger, thicker recoil spring that's isolated from all of the barrel's heat and barrel harmonics.
>> No. 108112 ID: 32ddd4
  the sig mcx seems to take the concept of a contained recoil system in the receiver like the LR300 into the current year. it seems pretty cool from having handled some of the variants but i can't speak for how well SIG USA pulled it off. i guess it was good enough to be adapted by the UK metro police, lol
>> No. 108174 ID: 8fe1aa
  >>108097
Well there is the AR-18 and AR-180...

Really I wish someone was manufacturing reciever flats and parts kits for them. I would totally build one; I think they are quite a bit sexier than an AR-15.
>> No. 108178 ID: f2172d
>>108174
I feel that the AR-18 is a tiny bit more fiddly than the AR-15 when it comes to field strip; aligning the recoil springs, BCG, charging handle just right takes a certain touch. It's hard to explain, but it's easy to misalign the BCG and bolt when re-assembling the gun. It's not necessarily more reliable, either, although most of the malfunctions I have experienced with the 18 were magazine related (either the original Armalite magazine, or converted AR-15 USGI mags). Also, good luck when parts break. My gunsmith took 8 months to hand-file a new, more robust auto-sear assembly when mine broke.

Years ago I posted a AR-18 field strip thread here, but I think it's been lost to the ages.
>> No. 108184 ID: 9dcda2
>>108178
> google site:operatorchan.org ac556guy ar-18

http://www.operatorchan.org/st/res/2703.html
>>>/st/2703

Still there!
>> No. 108185 ID: 764ef6
  OP might be interested in this
>> No. 108190 ID: f5c3ed
>>108185
BONER STATUS: ACHIEVED!
>> No. 108193 ID: 61e76a
>>108190
Funfact: The SA80 was a modernised AR-180 innitially. I'd reserve judgement for the InRange review.
>> No. 108194 ID: f5c3ed
>>108193
Too late, already want one badly. May even order one once there available because I've been working a fair amount of OT and have more money than ever saved. That and I paid off a good amount of vehicle loans already.
>> No. 108195 ID: 6811f1
>>108194
I need one as well.
>> No. 108196 ID: c935e2
>>108185
I just wish they moved the charging handle to the left side. The gun is modernized pretty significantly. Might as well move the charging handle too.
>> No. 108198 ID: f2172d
>>108196
It's a reciprocating charging handle. I'd be worried about something getting in the way and causing short strokes, which I've accidentally done when firing SCARs before.
>> No. 108199 ID: 9dcda2
File scarginghandle_1.webm - (1.76MB )
108199
>>108198
I love the reciprocating charging handle on the SCAR. I have never had my thumb whacked or had it catch on my gear or any other problem with it. Great for press checks and just positive control over the bolt.

I have watched people get their thumbs whacked, but only if I forget to brief them first.
>> No. 108200 ID: c935e2
>>108198
I could see the same problem with a right side charging handle, but at least it's more accessible.
>> No. 108431 ID: 63f1c2
File 155548324199.jpg - (2.22MB , 4032x2268 , 20190417_022149_noexif.jpg )
108431
>>108185
And a clip of ammunition for my little Armalite.
>> No. 108441 ID: 5d76a7
>>108431
Dope. Now you just need a dramatically overpriced folding stock mechanism for your AR-15 lower that won't be used at all.
>> No. 108442 ID: f2172d
>>108441
and here I went a put a fixed stock my -18.
>> No. 108448 ID: 5d76a7
>>108442
I can't knock it. Most AKs on the planet have fixed stocks too, I assume. To each his own.
>> No. 108449 ID: f5c3ed
>>108441
I needed one more AR upper before buying a house.
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