What do you guys make of this?

StrikerX50 · 2010-06-23 08:45:53

A 5.7 conversion kit for ARs AR57 (http://www.57center.com/)

06-23-2010, 04:45 AM

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What do you guys make of this?

A 5.7 conversion kit for ARs

AR57

06-25-2010, 09:53 PM

Overtaker

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I'm not sold on the idea of buying a 5.7 upper for an AR15 when you could just get a PS90. This upper just seems like more of a novelty.

06-25-2010, 10:19 PM

Ryan in SD

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Its pointless since you cannot buy the better performance rounds as a civilian...might as well get a .22 magnum uppper...

06-26-2010, 01:25 AM

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So I'm looking at the ballistics for the 5.7x28mm round, and the best load that FN sells to civilians uses a 40gr bullet resulting in muzzle energy of 340 ft-lb (their law enforcement load is still less than 400 ft-lb). Compare this to a 62gr 5.56 NATO @ 1,303 ft-lb.

06-26-2010, 01:34 AM

stuka

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REPR

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06-26-2010, 09:38 AM

Dr. T

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Buy your 5.7X28 ammo here: Home Elite Ammunition loads their ammo to specs that better realize the 5.7's potential.
The AR57 is a novelty in my mind. Rather have a PS90.....but if I'm grabbing for a rifle it'll be 5.56 or .308