MR-3 ARS TM ARSENAL DSTU 2651/GOST 380-2005 (St 0, St 1, St 2, St 3) bo'yicha uglerodli po'latdan yasalgan konstruktsiyalarni qo'lda yoy payvandlash uchun mo'ljallangan - "KP", "PS", "SP5" va GOST-0k80 (GOST-0k80, 08ps, 08, 10kp, 10ps, 10, 15kp, 15ps, 15, 20kp, 20ps, 20).