MPA10 -45 ACP Pistol
MPA1A01B -45 ACP Lower Assembly
MPA30 -9mm Pistol
MPA20A01B -9mm Lower Assembly
MPA930T -MINI 9mm Pistol
MPA930A01B -MINI 9 Lower Assembly

DS9 Manual 3-21

DS9 Disassemble and Reassemble Video

Masterpiece Arms BA Chassis System Installation rev Feb 2020

MPA BA Rifle Manual 9-19

MPA Defender Manual 10 & 30 Series

MPA Defender Manual 57DMG & 5700DMG