Airsoft Canada - View Single Post - WE M4 GBBR - Trademark lower doesn't fit blank upper, is that normal?

SF_Chewy · April 7th, 2015, 14:27

Happened to me too.

I have a WE M4 (no trades), then I bought a new WE upper to make a CQB build. I found out after trying to reassemble it that it was all out of tolerance. Nothing fit well into it, and still needs modding to fit properly. All the pins wouldn't fit properly from one upper to the next.

So I would chalk this up to poor tolerances from the WE factory. You may need to sand and/or grind one piece so that it fits into the other.

April 7th, 2015, 14:27	#2
SF_Chewy Trader rating Join Date: Mar 2010	Happened to me too. I have a WE M4 (no trades), then I bought a new WE upper to make a CQB build. I found out after trying to reassemble it that it was all out of tolerance. Nothing fit well into it, and still needs modding to fit properly. All the pins wouldn't fit properly from one upper to the next. So I would chalk this up to poor tolerances from the WE factory. You may need to sand and/or grind one piece so that it fits into the other.