Posted on 08/06/2016 3:36:02 PM PDT by w1n1
The AR57 Is An Excellent High-capacity Yet Affordable Alternative For Self-defense and Varmint Hunting.
The AR57 (also known as the AR Five Seven) upper receiver for the AR-15 has two claims to fame: a 50-shot capacity and downward ejection for ambidextrous operation. Operating by simple blowback, this upper is available in 6-inch pistol and 16-inch rifle versions, with the latter being reviewed here.
Manufactured by the eponymous AR57 LLC, and chambered in 5.7x28mm, this upper is less powerful than the standard 5.56mm version, but it has certain tangible advantages, including reduced muzzle blast, a high practical rate of fire, nonexistent recoil, and the ability to use folding stocks. Since the buffer is located within the receiver, folding stocks may also be used for compact storage or carry.
To load, place the baseplate of a standard FN P90 magazine into the recess on the front of the upper, then press the feed lip side down on the catch located above and slightly back of the bolt. To charge, pull on the right-side nonreciprocating handle and release. The right-side charging hand placement makes it accessible for operation by the strong hand. Since it only has to be operated once every 50 shots, the time penalty for moving the hand off the pistol grip isn’t too great. Read the rest of the gun review here.
My 375 H&H Mag is king. But, 308 with plenty of 20 rd mags and never a misfire is a pit bull if things get nasty.
During the Fort Hood massacre, 2 very brave and highly motivated soldiers with systems flooded with adrenaline attempted to attack the terrorist from close range with tables and chairs. Each was instantly stopped by 5.7mm SS192 hits to the center mass. A third victim, a big hulking orderly, tried to tackle the shooter. He too was instantly stopped by 5.7mm SS192 fire.
The first arriving cop on the scene, a female officer named Munley, engaged the terrorist in a shoot out, and was immediately and completely incapacitated and then disarmed by a single hit of SS192 to her knee. She is still disabled all these years later, as her knee shattered into HUNDREDS of pieces and she has required numerous surgeries to repair the knee with a complete knee joint replacement.
For a direct comparison to how 5.7mm performed against 9mm that same day, the second arriving officer, an Officer Todd, shot the terrorist FIVE TIMES with 9mm police JHP ammo before the terrorist went down, and only then because his spine was severed.
So, in the same shooting on the same day, 5.7mm SS192 scored 4 instant stops against 4 separate determined attackers, whereas 9mm JHP required 5 hits including a CNS hit to stop the terrorist.
During the shooting it was believed that there were as many as 3 shooters with automatic weapons, such was the volume of fire that the terrorist laid down with his Five SeveN pistol.
In the Mexican drug wars, the Five Seven has acquired an infamously legendary status, and can fetch up to $5000 on the black market. The Mexican media call it the “Matas Policia,” Aka, “The Cop Killer.”
The one “expert” on the internet that blasts the Five Seven and 5.7mm has NEVER TESTED A SINGLE ROUND OF 5.7MM IN GEL, AND HAS NEVER EVEN FIRED A FIVE SEVEN.
Doesn’t stop him from badmouthing the hell out of it though....with comments based on discontinued and prototype rounds...which he has also never tested.
The USSS protects the president of the United States with 5.7mm P90 SMG’s. That tells me all i need to know. If it’s good enough to protect the president, it’s good enough to protect me too.
http://forum.pafoa.org/showthread.php?t=180978&page=3
I have finally ventured into AR world. I have ordered a Grendel Upper, but alas its on back order.
I have many a 8 rd clip loaded with M2 AP for when it gets nasty.
“the Secret Service uses the FN P90 in 5.7 to protect tbe President.”
Which is full auto.
The P90 is designed from the bullet up to defeat soft body armor by making a lot of small holes very fast. The FiveseveN handgun and related bolt action rifle are intended to complement that capability.
Alas, full auto is denied us peons. Marvelous as the 5.7mm is (a well improvement over the .22LR), and as excited as I am seeing the 50 round mag on an AR platform, it just isn’t worth it if full auto isn’t available.
Can you still get M14s on the open market?
You can get ammo for the 5.7 up to 3300 fps. This allows for cavitation on part with almost any gun you can name, in a light bullet with almost no recoil. Full auto or not makes little difference; the round is what makes these Guns effective. Legacy rounds simply cannot hold a candle to them.
M2 AP, yes, i have that too because I have an M1 Garand like you seem to have, with the 8-round clips.
I need one of those but, for sure, they aren’t Cali legal...
M1As are more available than M14s these days.
Last quibble. I've never shot the non lead frangible round that the author says won't go through a 12 oz soda can, but the round I shoot will go through a 3/16" cast iron spinner target without spinning the target at 40'.
Yeah, but that's a little dangerous in an urban environment for home protection.
Great for shooting communists though, also for out and about.
Now you're selling speculation as knowledge.
Both the 5.7 and the 4.6 were specifically developed to supersede the 9mm in all specifics. That a full auto PDW was first in production is completely incidental. Just look up the NATO request or check Wikipedia.
I have noticed A LOT of bad information on the interwebs about this round.
For example, many have assumed hollow points indicate an expanding round. With the 5.7, this is incorrect. Hollow points in 5.7 rounds are there to initiate the “tumble” of the round after an initial 2-3 inches of penetration. The practical effect is the round does not dump all it’s energy breaching the initial barrier as with “legacy” rounds. Rather, the shape of the bullet expends relatively little energy on initial penetration, then really dumps it as the 7/8 length bullet begins to tumble at the aforementioned depth.
Doubtless, without the hollow point you would see the failure to tumble that has long plagued the 5.56; with it, the round seems to perform brilliantly.
Crap penetration?
Check out post #86 of this thread (cannot link image directly as apparently it is a private album):
http://forum.pafoa.org/showthread.php?t=147999&page=9
There is a reason this specific caliber is used to Protect POTUS and the Queen of England.
But hey, mebbe 'ol Jake's off his rocker.
One of the regular posters over on ARfcom has a tagline.. "308, 'cause humans have a tendency to hide behind chit when ya start shootin at'em". I agree. d;^p
PS- I'm jest havin a l'il fun here. It's a sexy l'il cartridge just beggin to be necked up & down and initially gave me a l'il chubby just like the 6.8. I'm sure it's a hoot. I caught the same for my first 300BLK. I don't get a chance to fuss over ballistics much anymore. d;^)
RE “...Belgian configuration ...”
That would be a P90? That’s one Hell of a room broom.
Neat little buzzsaw.
I’m thinking more of the FN 5.7 handgun.
20 rounds in the grip... not bad at all.
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