How can i remove the brads placed in the wrong channel. now in the left staple channel.

SOURCE: Just purchased t27 arrow staple

That stapler takes a jt21 staple. some fill from the bottom when the plunger is in the drawn back position and some fill from the rear with plunger removed. If the plunger is attached, then it fills from the bottom. Hope this helps:)

SOURCE: how to load brads into stanley tre 550 electric

HOW TO USE YOUR ELECTRIC STAPLER/NAILER
TO LOAD STAPLES

1. Unplug tool, (fig. 1)...(place on/off switch in "off" position, (fig. 2).)
2. Place on/off switch in "off' position.
3. Select proper staple length.
4. Use only staples identified by stock numbers on next page. Substitute staples may cause jamming.
5. Hold tool upside down. (Squeeze latch and pull, (fig.3).)
6. Drop staples in channel, legs facing upward. Push latch back in to lock in place, (fig. 4).

TO LOAD BRADS

1. Unplug tool, (fig. 1)...(place on/off switch in "off" position, (fig. 2).)
2. Use only brads identified by stock numbers on next page. Substitute brads will cause jamming.
3. Look for the image of a brad nail on the front side of the tool (fig. 5). Load brads into this side only.
4. Hold tool upside down (Squeeze latch and pull, (fig. 3).)
5. Drop brads into the channel, tilt the tool so the brads lay against the channel wall, (fig. 5).
Push the latch back in watching that the brad strip does not fall over.
6. Use High/Low power when driving brads.


TO STAPLE OR NAIL

1. Make sure the on/off switch is in the "off" position, plug stapling tacker in.
2. Turn tool on by switching to position 1 which is the "on" position and hold firmly against work surface to
engage safety mechanism.
3. Apply adequate pressure on the top of the knob (fig. 6.) while the trigger is pulled.

You can find the figures mentioned above at the following link:

http://bdk.force.com/FAQ/servlet/fileField?retURL=%2Fapex%2FPKB_Article%3Fid%3DkA0C0000000CdtPKAS%26brand%3DStanley%26returl%3D%252Fapex%252Fpkb_search%253Fbrand%253DStanley%2526mode%253D0%2526model%253D%2526sortby%253D0%2526terms%253DTRE550&entityId=ka0C0000000CdqqIAC&field=File_1__Body__s

SOURCE: How do you load brads into the Arrow t50pbn staple gun?

Yes, the gun comes with no instructions. Strange but thanks, there is Internet. DO NOT PUSH THE TRIGGER during any time of this process. BE SAFE and use your common sense. If you don't know what you are doing, stop right now and see help from someone who knows more.

1. Turn the gun upside down so the bottom of the gun is upwards. let's suppose the end through which the stapes come out are on the left side and a little spring push tab is on the right side when the gun is in this position.
2. Push the spring tab in and you will see a little catch disengage from a notch (the notch is located just above this push tab).
3. While keeping the tab pushed in, pull the tab up until the catch that disengaged from the notch (see step, above) comes clear of the notched area of the gun.
4. The spring loaded bar / arm will pop /slide out now.
5. Load the staples into the staples housing / channel (make sure the open end of the staples is upwards (remember, the gun is upside down and the bottom of the gun is facing up)).
6. Slide the spring arm back in. Push it in a bit and let the catch in the push tab pop back into the notch.