MR762 A4 13″ SBR

The short-barrelled rifle configuration of the MR762 A4 in 7.62×51, with a 13in barrel and a stock.

The distinction from the pistol version: the stock makes this an NFA item requiring a tax stamp and registration. The 13in pistol is the same barrel without that process.

Worth knowing: SBRs are restricted in several states regardless of federal approval. Check your state rules first. The unrestricted alternative is the 16.5in rifle.

Parts note: MR556 and MR762 share some components — bolt catch sleeves, sear springs, forward assists — but barrels, buffers, gas blocks and magazines are caliber-specific. Browse upper receiver parts and lower receiver parts.

Compare configurations in the MR Series.

Firearms and regulated components are not sold directly on this site. Listings are informational and link to the manufacturer web shop or an authorised dealer; transfers must be completed through an FFL.