Quoted: my last build would have been a piece of cake if it didnt take a metric ton of force to get the roll pins in. I need to sand and lube those suckers like there's no tomorrow! CMMG LPK with Spikes lower. |
Do you have a vise, dial calipers, drill bits, and CLP?
First check the hole diameter on your lower with your drill bits and check the diameter with your calipers. Next, check the diameter of the roll pin you need to press/drive in (bolt stop or trigger guard).
The trigger guard is the trickest install for me, so this is how I've done all of mine after the first two lower parts kit installs.
I check the roll pin versus the lower for the diameters with my calipers and drill bits. The roll pin is usually approximately 5 thousands larger in diameter and is a pain to install even if lubed (roll pin and the lower trigger guard hole).
I place the roll pin in my bench vise and slowly squeeze/apply pressure and try to reduce the diameter by about 3 thousands.
Then with copious/abundant/plentiful (but not liberal) use of CLP or any other slippery lube, I press/drive the roll pin into the lower and thereby install the trigger guard.
I did not like trying to install the trigger guard roll pin using alot of force into such a delicate area, even with it sufficiently supported.
YMMV, and I welcome comments.