MasterPiece Arms is now making a short barrel rifle (SBR) version of their 5.7×28 gun. Â The new SBR has a threaded 8″ barrel for the included muzzle brake, or for the MPA Suppressor (which is shown in these photos but does not come with the gun). Â Yes, all NFA rules do apply.
The MPA57SST-SBR (aka MasterPiece Arms 5.7×28 SBR) comes outfitted with an MPA short aluminum quadrail and a Strike Industries foregrip.  Based on the photos, the foregrip appears to be the “Cobra Tactical” that normally retails for $25.
A low-profile, side folding buttstock is standard equipment on this gun. Â The MasterPiece Arms SBR also ships with a 20-round magazine, gun case and adjustable front sight. Â Additionally, a Picatinny-style rail on top of the receiver allows the easy addition of any optic. Â The optic shown in these photos does not ship with the gun.
At the 2012 SHOT Show, MPA announced pistol and carbine versions of this gun. Â My personal favorite of the bunch was the A-TACS finished version.
What I think is great, is that more and more companies are making NFA products. Â In this case, MasterPiece Arms is making an SBR which is just begging for the addition of a suppressor. Â It is almost like someone figured out that the NFA boogeyman is a paper tiger, requiring just a little more paper to get it done. Â Now, I’m all about repealing much of the NFA and deregulating SBRs and suppressors, and I think that the additional paperwork and costs are illegal. Â However, I applaud everyone who is making and buying these guns in spite of the NFA.
The MPA57SST-SBR comes with a lifetime warranty and is made in the USA. Â MSRP is $799.95, which does not include any of the tax stamps/paperwork required by the feds.
2 replies on “MasterPiece Arms 5.7×28 SBR”
Please explain to me what the NFA requirements are for purchase of SBR’s
This is a pretty good walk through on obtaining a SBR: http://www.ar15.com/mobile/topic.html?b=6&f=17&t=257740