If the P-90 has a rail for the sight, then almost any big sporting goods store will have one. Like Cabelas, Bass Pro, Dicks or Big 5.
FN P90 is a CQB (Close Quarter Battle) weapon. The barrel is short (also in the in the airsoft version) so it will not be effective at long range. You don't need scope. You need a red dot sight. Get an Aimpoint M2 (the most common red dot sight for P90), Holosight 551, or reflex sight. Those will suit for function and fit for the look of your P90.
in mw2 the p90 shoots faster but the scar hits harder. while using bling and having rapid fire and the red dot or holographic sight. so in my opinion with this attachments i think the p90 is better!
an electric sight is a "red dot" sight that uses a laser to project a red dot where the airsoft bbs will go when you sight it it.
The BSA red dot sight test measures how well a person can use a BSA red dot sight on a gun. BSA red dot sights are good for quarter and medium range targets.
M16 Red Dot | P90 Silincer
Get a red dot sight or reflex sight and create the lens....
There is essentially no difference in the two, they both do the same thing but they look different on the outside. Technically speaking, a red-dot is a reflex sight.
use a sniper
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It isn't in MW3. It's basically a red dot sight with a customizable center dot.
The red dot tube is a type of sight or scope with adjustable magnification.
The red dot sight from Call of Duty: Modern Warfare 2 was only available during the builds of MW3 and was never actually released for the game. For unknown reasons the red dot sight from MW2 was cut and they used a similar model from the original Modern Warfare but with changes. But an AK-47 with the MW2 red dot sight can be found in MW3 in the spec ops mission "Kill Switch".