AR57 Suppressed, Stiffer buffer spring or leave as is?

Discuss rifles chambered for the 5.7x28mm; P90, PS90, and AR57.
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Kiran04
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Joined: 14 Aug 2015, 05:33

AR57 Suppressed, Stiffer buffer spring or leave as is?

Post by Kiran04 » 25 Mar 2016, 18:16

Thoughts?

DoubleJ
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Joined: 10 May 2011, 20:20

Re: AR57 Suppressed, Stiffer buffer spring or leave as is?

Post by DoubleJ » 25 Mar 2016, 20:29

What barrel? I've got the EA modified EFK barrel with their spring, pistol cycles the same with or without an Axiom on the end of it, which is to say fairly reliable, but certainly no worse with the can on it.

Kiran04
Junior Member
Posts: 106
Joined: 14 Aug 2015, 05:33

Re: AR57 Suppressed, Stiffer buffer spring or leave as is?

Post by Kiran04 » 26 Mar 2016, 19:20

DoubleJ wrote:What barrel? I've got the EA modified EFK barrel with their spring, pistol cycles the same with or without an Axiom on the end of it, which is to say fairly reliable, but certainly no worse with the can on it.
16"

DoubleJ
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Posts: 400
Joined: 10 May 2011, 20:20

Re: AR57 Suppressed, Stiffer buffer spring or leave as is?

Post by DoubleJ » 26 Mar 2016, 20:39

Derp! I'm dumb, I keep forgetting there are other platforms than the FsN for the 5.7. Don't have an answer for you, since the AR57 ejects down, can't use your ejection pattern to determine if you're overgassed (over blowbacked?) or not once you screw the can on. I'd say if it continues to function reliably, you're probably OK to leave the stock parts in. Actually, now that I think about it, since it's not a DI system and operates more like a 22, I think you should be fine. ARs need more spring or buffer with a can because dwell time is increased slightly due to the can. I've never heard of anyone adding more spring to any other type of system when adding a can, as you're really just effectively simulating a slightly longer barrel, which would have no effect on bolt or slide speed unless we're talking about really short barrels on rimfire stuff.

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