The AR-M1 plastic folding butt variant features a polymer side-folding shoulder stock, producing an overall length of 960mm (stock extended) and 722mm (stock folded). Weight without magazine is 3.84 kg.
Compared to the metal folding-butt AR-M1F (945mm extended / 695mm folded / 3.67 kg), the polymer stock construction results in a larger folded geometry and greater weight – the polymer housing accommodates a wider contact surface than the tubular metal design.
The 415mm barrel, 370mm sight radius, 30-round polycaproamide magazine, and 15,000-round system service life are common across the AR-M1 family. Compatible 7.62×39mm cartridges are listed in the Atlas supply catalogue alongside fixed-stock and metal folding-butt configurations in the assault rifles section.
Available for institutional procurement by ministries of defence, authorized defence contractors, and licensed importers. Inquiries must include product designation, required quantity, country of final destination, intended end-use declaration, and applicable end-user certificate (EUC) or import authorization.