The rear takedown pin is not being secured in the closed position. When I exntend the pin out (for cleaning or upper removal) the little dent pin locks in the rear takedown pin in the open position. I've taken it apart on several times trying to figure out what's happening and why the rear takedown pin isn't locking and securing in the closed position. While I've taken the rifle to the range and fired just over 500 rounds through it I've never had a problem with the pin working itself loose.
The rear takedown pin itself shows the little countersink at the end of the groove for the dent to fit in. I've manually fit the dent into that little divet enough times to know that it will fit in there freely.
The only thing I can think of is that the takedown pinhead is just a few thousandths too thick and if I file off material from the bottom of the pin head where it touches the lower, maybe it'll lock in there.
The rifle in question is my first AR build that was a Del-Ton dissipator kit which I bought from Midway. I bought an actual Del-Ton lower from Cheaperthandirt.com so the whole rifle matches as far as manufacturer goes. I'm not unhappy with the rifle and in the big picture of things, this is a very minor issue that I could see people overlooking, but it just drives me nutts to know it's at 99.99% instead of 100%.
Anyone have any thoughts or recommendations?
The rear takedown pin itself shows the little countersink at the end of the groove for the dent to fit in. I've manually fit the dent into that little divet enough times to know that it will fit in there freely.
The only thing I can think of is that the takedown pinhead is just a few thousandths too thick and if I file off material from the bottom of the pin head where it touches the lower, maybe it'll lock in there.
The rifle in question is my first AR build that was a Del-Ton dissipator kit which I bought from Midway. I bought an actual Del-Ton lower from Cheaperthandirt.com so the whole rifle matches as far as manufacturer goes. I'm not unhappy with the rifle and in the big picture of things, this is a very minor issue that I could see people overlooking, but it just drives me nutts to know it's at 99.99% instead of 100%.
Anyone have any thoughts or recommendations?