$1,400.00

CMMG MK47 5.7×28 & Monstrum Prism Optic

  • Price Negotiable?: Yes
  • Phone Number: Click to view
  • Condition: Like New
  • Listing Type: Individual
  • City: Orem
  • State: Utah
  • Zip/Postal Code: 84058
  • Local County (e.g., Summit County): Utah
  • Make/Brand: CMMG Aero Percision Monstrum
  • Model: CMMG Banshee MK57
  • Caliber: 5.7x28
  • Terms: Must agree to terms
  • Listed: September 3, 2026 9:19 pm
  • Expires: 12 days, 14 hours

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20260813_211543
20260813_21155020260813_21164720260813_2119071000032830

Listing Type: Individual

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Description

MK57 build put together by Reddy Gunner in Orem.

Full package, ready to go with everything you need:

CMMG upper
Aero Percision lower (can accept many caliber paired with different uppers)
Pistol brace
Monstrum 3x Prism Optic
100 rounds of Federal 5.7×28
(2) CMMG magazines

Basically brand new, only 2 magazines through it, but I got married and need the cash to help pay for various wedding expenses.

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Listing ID: 1236a9a388c63c38
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