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AR57 ULT 12in Barrel 5.7x28mm Upper Receiver Assembly AR57ULT-12 Caliber: 5.7x28mm, Overall Length: 24.5 in, 13% Off w/ Free S&H
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Customer Reviews
Helpful Positive Review
I purchased my AR-57 upper quite a while back but I just took it to the range today and thought I might as well review it. First off, the thing is just downright fun. 5.7 is a little more expensive per round but it's a pleasure shoot. I shot mine as ...
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2/2 found this helpful
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Helpful Positive Review
I configured mine for an AR pistol home defense build. Plenty of capacity and less over penetration than 5.56.
2/3 found this helpful
Helpful Negative Review
not happy - the product picture clearly shows a magazine - yet none ship with the upper. if you dont include it - the show an EFFN picture without a mag or make it very clear the upper doesnt include it. i checked other stores and they show a mag an...
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2/9 found this helpful
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Most Recent Reviews
I purchased this out of curiosity. Ammo prices have come down to $.40/round. Hopefully, they will drop to a more reasonable $.20/round based on their actual cost to manufacture. The upper had a very stiff action at first. I disassembled it, clean...
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Most Recent Reviews
Great product haven't tried it out. Down side doesn't ship with magazine. This company very anti high capacity magazines. Should have been shipped with at least a 10 round magazine. Now have to wait till i order the 50 round magazine. The magazi...
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5/19 found this helpful
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Most Recent Reviews
This is the second one of these uppers I have ordered. The first one was from Aim Surplus when they first came back in stock in July of 2023. That one shipped with a 50 round mag. I enjoyed it so much that I ended up ordering a second one through Opt...
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7/31 found this helpful
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Caliber: 5.7x28mm Overall Length: 24.5 inBarrel Length: 12 inBarrel Twist Rate: 1-8.5 Threads per Inch: 1/2x28 Muzzle Device: Muzzle Brake Finish: Melonite Color: Black Included Accessories: Standard Condition: New
Code: 5FC-URC-AR58-AR57ULT-12
MPN: AR57ULT-12
UPC: 051497388553
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Product Info for AR57 ULT 12in Barrel 5.7x28mm Upper Receiver Assembly
DISCLAIMER: MAGAZINE IS NOT INCLUDED
Specifications for AR57 ULT 12in Barrel 5.7x28mm Upper Receiver Assembly:
| Manufacturer: | AR57 |
| Caliber: | 5.7x28mm |
| Overall Length: | 24.5 in |
| Barrel Length: | 12 in |
| Barrel Twist Rate: | 1-8.5 |
| Threads per Inch: | 1/2x28 |
| Muzzle Device: | Muzzle Brake |
| Finish: | Melonite |
| Color: | Black |
| Fabric/Material: | 7075-T6 Aircraft Grade Aluminum, 8620 Alloy Steel |
| Gun Type: | Rifle, Automatic Rifle |
| Gun Make: | AR Platform |
| Included Accessories: | Standard |
| Condition: | New |
| Magazine Included: | No |
| Rifling Profile: | 6 Groove Rifling |
| Mount Type: | Picatinny |
| Attachment Type: | Picatinny |
Package Contents:
- AR57 ULT 12in Barrel 5.7x28mm Upper Receiver Assembly
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1–1 / 1AR57 ULT 12in Barrel 5.7x28mm Upper Receiver Assembly Orderable Models
List of Orderable Models
- AR57 ULT Upper Receiver Assembly, 12in Barrel, 5.7x28mm Caliber, AR57ULT-12 , MPN: AR57ULT-12 , UPC: 051497388553 , Code: 5FC-URC-AR58-AR57ULT-12
AR57 ULT 12in Barrel 5.7x28mm Upper Receiver Assembly Unavailable & Discontinued Models
List of Unorderable Models
- DEMO, AR57 ULT Upper Receiver Assembly, 12in Barrel, 5.7x28mm Caliber, AR57ULT-12 , MPN: AR57ULT-12-DEMO , Code: 5FC-URC-AR58-AR57ULT-12-DEMO
- USED AR57 ULT Upper Receiver Assembly, 12in Barrel, 5.7x28mm Caliber, AR57ULT-12, EDEMO1, Used, Condition Like New , MPN: AR57ULT-12-EDEMO1 , Code: 5FC-URC-AR58-AR57ULT-12-EDEMO1