The 1377 is long, yes, but only really when comparing with very compact pistols.
They are amazingly accurate things. On three pumps it's very quiet and it's really only when using 7 or more that it stars to crack.
G-Mac will do a silencer adaptor for them, so even on full power with a silencer fitted, it'll still be quiet.
HUGE customising community for these and the Ratbuster derivatives.
Easy to look after/strip/modify if required. A superb, very underrated pistol for not a lot of money.
GET ONE!!