Depending on ammo there is about 30-40 fps difference.
The muzzle threads are partly under a 7" handguard with the 7.5" barrel, that would be bad if you want to use a muzzle brake or silencer mount.
Pros and cons of either barrel or velocity figures? I have had 12 and 16 inch barrels but I am itching for a super short PDW.
Depending on ammo there is about 30-40 fps difference.
The muzzle threads are partly under a 7" handguard with the 7.5" barrel, that would be bad if you want to use a muzzle brake or silencer mount.
Todd
No longer working at Noveske
Thats k...since this will be more of a toy the 7.5 will work just fine then.