(0) Total $0
Aero Precision 5.7 8" AR15 PDW Pistol Upper Group CQB Mk57 5.7x28mm AR-15 AR57
Aero Precision 5.7 8' AR15 PDW Pistol Upper Group CQB Mk57 5.7x28mm AR-15 AR57

Aero Precision 5.7 8" AR15 PDW Pistol Upper Group CQB Mk57 5.7x28mm AR-15 AR57

Part Number:AERO-57D88C3
On sale: $849.95
Retail Price:$999.95
You Save:$150.00(15%)
In Stock.

Choose Options

Length
Accessories
Muzzle Device
Size
Style
Aero Precision 5.7 8" AR15 PDW Pistol Upper Group CQB Mk57 5.7x28mm AR-15 AR57

Add this Lightweight Aero Precision Complete Upper Receiver with the reliable CMMG 5.7x28mm Radial Delayed Blowback System to any existing AR15 lower to add this powerful cartridge to your arsenal!

Ultralight and compact while bringing higher capacity and power, this 5.7 Upper Group is a fantastic Close Quarters CQB Personal Defensive Weapon PDW choice for your next Short Barreled Rifles (SBR’s- All NFA Rules Apply) or AR pistol build. 

Optional Muzzle Device Choices:
A2 Flash Hider
VG6 Gamma Brake
Strike Industries Cloak Hider
Levang Linear Compensator
Hera LCS Linear Compensator Small
Guntec Fake Suppressor

Includes:

  • Aero M4E1 AR15 Assembled Upper Receiver with No Forward Assist
  • Aero 7" M-LOK ATLAS R-ONE Handguard
  • Aero Breach Ambidextrous Charging Handle INCLUDED
  • CMMG 8” 1:9 Twist, Medium Taper 4140 SBN
  • CMMG 5.7 BCG INCLUDED
  • Product comes assembled with CMMG's Lifetime Quality Guarantee
  • The muzzle device that comes with this complete upper receiver must be selected and is NOT pinned nor welded to this barrel. NO MAGAZINE INCLUDED UNLESS ADDED.

Aero M4E1 AR15 Upper Receiver with No Forward Assist Features:

  • M4 Feedramps
  • Forged 7075-T6 Aluminum
  • .250 takedown pin holes
  • Laser engraved T-marks
  • No forward assist provisions
  • Port door installed

ATLAS R-ONE Handguard Features:

  • Full top picatinny rail for optional attachments
  • Quick disconnect sling socket at the 3, 6 and 9 o'clock positions
  • Compatible with low profile gas blocks
  • 1.3" Inside diameter
  • 1.5" Outside diameter
  • Compatible with mil-spec AR15 upper receivers and barrels
  • Learn More about our NEW ATLAS Hanguards

8" 5.7mm Pistol Length Barrel Features:

  • Chamber: 5.7mm
  • Length: 8"
  • Twist: 1 in 9
  • Threading: 1/2"x28
  • Material: Chrome Moly Vanadium
  • Finish: QPQ corrosion resistant finish both inside and out
  • Gas System: Delayed Blowback
  • Weight: 17.25 oz
  • M4 Barrel Extension
Specs:

Shipping to FFL Dealer RequiredNo
Made In America?Yes
PlatformAR15
SeriesATLAS
Caliber5.7x28mm
Barrel Length8"
FinishAnodized Black
Weight2lbs 13oz
Total Length15.5"



Optional ADD-ON:

40 Round Mag 54AFCA2
CMMG’s 5.7 AR Conversion Magazine holds 40 rounds of 5.7x28mm and fits in any standard AR15 lower receiver. To use, simply attach a CMMG 5.7x28mm Radial Delayed Blowback complete upper receiver to an existing AR15 lower. Then, insert CMMG’s 5.7 AR Conversion Magazine to safely feed 5.7x28mm ammunition. CMMG recommends using a standard carbine buffer and action spring to reliably cycle the action in this configuration. The 5.7 AR Conversion Magazine also retains last round bolt hold-open functionality, allowing for faster reloads.

CALIBER: 5.7x28mm
CAPACITY: 40 rounds
WEIGHT: 8oz(unloaded)

Related Items

 
 
[ITEM_NAME]
Product Name
[ITEM_NAME]
Qty
[ITEM_QUANTITY]
Price
[ITEM_PRICE]
Subtotal: $0
TOTAL: $0
YOUR CART IS EMPTY
Information
Browse By Category
Browse By Price