MasterPiece Arms is releasing a new SBR: the MPA570SST-SBR. The 570SST-SBR will be chambered in 5.72 x 28, have adjustable front and rear sights, side-cocking charging handle, muzzle brake, MPA’s own short aluminum quadrail, a low profile folding buttstock and the Strike Industries Foregrip. The Barrel will be 10″ threaded, featuring 1/2″ x 28 threads so it will be ‘can-ready’.  The MPA 570SST-SBR is based on their MPA57SST 5.72 x 28 MM pistol.

The new MPA SBR, stock folded.

About the stock:

The MPA stock works with 930, 30, 10 or 57 series pistol receivers. It secures to the frame w/ ¼-20 threaded hole behind grip on the lower section receiver. Features a lock nut to hold the screw in place on the inside of the receiver below the sear plate.

Side Cocker, Scope Mount
one (1) 8″ Threaded Barrel
one (1) 20 Round Polymer Magazine
one (1) Muzzle Brake
Thread Size 1/2 x 28
American Made
Ships in Gun Case
Lifetime Guarantee
Strike Industries Foregrip
MPA Short Aluminum Quadrail
Adjustable Front Sight
Chamber 5.7x28mm
MPA Low Profile Buttstock
MPA Side Folding Attachment
MPA Suppressor Not Included

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