GBBR Lower receiver swap Help

[Thanh]

Hey guys, so I just picked up a full metal body from airsoft depot and after an hour i finally got everything swapped correctly and working fine for the lower receiver. Will be swapping the upper receiver after..

Now the problem I'm finding right now is assembling the trigger guard in the button. What tool do you need to release that pin? What do they call it?

[spartan117]

You need a small punch I use a small screw driver and a medium size wrench to punch it out.

[ex]

I usually use a small finishing nail turned upside down to knock out the roll pin.

[The Chad]

Just get a jewelers screwdriver or a body pin and lightly punch it through with a hammer or pliers. It is the same pin as on the bottom of a GBB pistol mag.

[m102404]

Referencing your pic...

The left end of the trigger guard is just a "push button" type of nub. Put an allen key into the hole and push it in...swing the guard down

The right end of the trigger guard is a roll pin. You need (i.e. should use) a punch that is sized to the size of the pin...not a pointed one that will actually start in the hollow center of the pin and cause it to expand as you put pressure on it. I HIGHLY recommend you setup a support block on the other side...a wood block with a hole for the pin that supports as much of the backside of the trigger guard receiver area. I've broken and seen broken a lot of bodies by not doing this. The "ears" that hold the pin will snap pretty easily.

Same putting it back in...make sure that there's a block supporting the backside of it. If you need to open up the holes a bit to get the pin in easily (but still snug).

[Thanh]

yeah i figure out how the other side gets in. but the pin that is provided seems to be too big. :S And I'm afraid of breaking the gun like you said..

I think im going to go out and buy the tool to put it in..

[m102404]

...open up the holes in the receiver...you can always flare the ends of the pin later.

Punches that small are sometimes hard to find. Cutting off the end of an Allen key is sometimes handy...just make sure the end that contacting the pin is flat.

[RacingManiac]

http://www.mcmaster.com/#roll-pin-punches/=8l8lo1

Get a set....some of the best money I've spent on airsoft tool...

[Thanh]

Hey guys, thanks for all the help. I got enough info to get this going. Tried other methods of putting it in so far with no luck. I'm going to go on a hunt for a push pin that size, or maybe open the the whole up worse case.

[Thanh]

just an update, I bought the tools, it broke it right off. now I'm pissed but should have seen it coming. I wonder why they make it soo hard to put a damn pin in.

Time for super glue I guess.

[Qlong]

One hole may actually be smaller than the other, preventing the pin from sliding out the other side, seen on G&P, Ino receivers.

[Thanh]

Originally Posted by Qlong

One hole may actually be smaller than the other, preventing the pin from sliding out the other side, seen on G&P, Ino receivers.

naw, both sides were the same, checked it before i tried to put the pin in. But i know what you mean. seen that too.

[HKGhost]

Depending on the brand, some have one side smaller than the other. I'm just curious, what did you break and how did you brace the receiver when trying to tap out the pin?

[Thanh]

Originally Posted by HKGhost

Depending on the brand, some have one side smaller than the other. I'm just curious, what did you break and how did you brace the receiver when trying to tap out the pin?

Well i got the pin out of the other one with a screw driver. but trying to put the other pin in the other metal receiver, it ended up snapping off.

Now i just super gluing the pieces together.

Now just playing the waiting game.