Suppressor Diameter Rear chamber Total length Weight Effect
WD228 MKII 70 mm 88 mm 228 mm 660 g 35+ dB
WD306 MKII 70 mm 162 mm 306 mm 793 g 36+ dB
WD356 MKII 70 mm 212 mm 356 mm 863 g 37+ dB
WD406 MKII 70 mm 262 mm 406 mm 990 g 38+ dB
WD456 MKII 70 mm 312 mm 456 mm 1100 g 38+ dB
WD506 MKII 70 mm 362 mm 506 mm 1204 g 39+ dB
WD228 XTRM MKII 70 mm 88 mm 228 mm 720 g 37+ dB
WD306 XTRM MKII 70 mm 162 mm 306 mm 853 g 38+ dB
WD356 XTRM MKII 70 mm 212 mm 356 mm 923 g 38+ dB
WD406 XTRM MKII 70 mm 262 mm 406 mm 1050 g 39+ dB
WD456 XTRM MKII 70 mm 312 mm 456 mm 1160 g 39+ dB
WD506 XTRM MKII 70 mm 362 mm 506 mm 1264 g 40+ dB

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With it’s 70mm diameter and six lengths from 228-506mm, Whisper provides very good suppression. Builds 140mm. Especially suitable for long range shooting. Space for 30mm barrel profile.