MasterPiece Arms Develops Two New Suppressors

MasterPiece Arms, manufacturers of the MPA MAC line of semi-auto pistols, carbines, suppressors and MPAR rifles, has developed two new suppressors, the MPA556S-II and the Murmur II, to add to the company’s expanding MPA suppressor line.The $400 MSRP MPA556S-II is a user serviceable can, utilizing a monocore design that gives you the ability to service and clean the suppressor without having to send it back to the manufacturer. This MPA556S-II can handle 5.56x45mm, .223, 5.7x28mm, .22 LR, .22 WMR and .17 HMR. The decibel ratings in 5.56 is in the 133 decibel range (10-shot weighted average using NI Labview Software/GRAS ¼-in. MICs) and in .22 LR, the can meters in the 113 decibel range.

The can weighs around 15 ounces, utilizing a titanium outer tube, front cap and a 17-4PH core. The MPA556S-II can handle full auto fire on full length barrels in 5.56.

The $400 MPA22 Murmur II utilizes a 17-4PH monocore baffle with a 304L stainless steel outer tube, front and rear cap and is the quietest .22 MPA has produced to date. The decibel ratings of this suppressor are in the 114-115 decibel range and due to the single monocore design, makes servicing and cleaning the suppressor quite easy.

It is laser engraved and includes a unique MPA texturing on the outer tube. The Murmur II is finished in Cerakote, weighs 5.4 ounces and measures 5.8 inches in length and one inch in diameter. This suppressor is rated for applications in .22 LR, .17 HMR, .22 WMR and 5.7x28mm. Spanner wrench included.

Like all Masterpiece Arms products, the new sound suppressors come with lifetime guarantees.

Do you shoot suppressed? Tell us about your experience in the comment section.

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Comments (5)

  1. What reasons do the ATF look for to approve or turn down an applicant to own a silencer? I live in a remote area but a neighbor about a quarter mile away calls the police whenever I shoot after dusk. Dusk here during winter is very early.

  2. I have not handled many suppressors. I see the 113 decibel value…Is that before or after the suppressor is used? Can we see what the value before suppressor and when the suppressor is used to compare the values.

    Thank you.

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