All airsoft can jam. Phrase your question better. Such as Does blowback airsoft jam more than spring airsoft?
There is no difference! A m16 or any other gun must be blowback to work. Are you talking about airsoft or something, it does not matter. So a real m16 is already blowback, cant change that! and if your talking about airsoft it does not matter
Yes
Unless it is electric.
no
Virtually no, unless you have a blowback gun.
Not sure what HBB airsoft is, do you have the acronym correct. I know that GBB stands for Gas Blowback.
A gun that cocks back automatically after you shoot.
Only when you are out of bbs in your magazine
The HK 416 Gas Blowback airsoft rifle measures 31.7 inches with buttstock collapsed and 34.8 inches extended.
No, however the gas lasts shorter.
shortyusa.com and airsoftpost.com
no