New concept bullpup

I am design this pup
18.5 AOL
5 lbs of weight
.22 Lothar Walther 10 inches
Full suppressor 70 dB wrap with carbon fiber tube 38 mm OD
Magazine 10 pellets
150 cc
4500 psi
Titanium deposit 1.5 inched OD
7075 alum body
Grip and butt plate nylon 66 and carbon fiber 30%

Please give me yours opinions.