Attwood Primer Bulb 3 8" Inner Diameter Hose Scope Mounts And Rings The magpul icon cvc t shirt The magpul icon cvc t shirt is made of 60% combed ring spun cotton and 40% polyester with a woodland camo magpul icon Johnson 90 115 130 25” or 30” Shaft 2 Stroke 2006 Present 105 150 1994 2001 125 1994 1998 135 20" Shaft 2000 2006 150 20" Shaft 2002 2006 175 200 1994 2001 225 250 300 1994 2001 175 200 20” Shaft 2 Stroke 2006 Present The exclusive three layer construction prevents collapse under vacuum and prevents ballooning or bursting under pressure and this bulb delivers 60 percent more output per pump than leading competitors