Rusan Q-R one-piece adapter for Pulsar Krypton (with screen positioning)

30 mm, 47 mm, 48 mm, 50 mm, 54 mm, 56 mm, 57 mm, 58 mm, 58.4 mm, 59 mm, 60 mm, 62 mm, 63 mm, 63.5 mm, 64 mm, 65 mm, 67 mm, 69 mm