One of my older and favorite AR builds is my 6mm/.223. I built it back in the early 80's. My favorite load is 100 gr Hornady soft-point bullets with 25.5 gr of BLC2 pushing around 2500 fps.
1968 Vintage Colt AR15 SP1 For Sale--PRICE DROP
The pivot pin on the SP1 is a larger pin with a screw in the end of it. To remove the pivot pin you remove the screw the pull the pin out. Colt designed it that way so military uppers couldn't be used on the SP1. You still run across the large...
I've been waiting for someone to come out with something like this. I just ordered a SIG SAUER SB15 Pistol Stabilizing Brace off eBay for $133.90 with free shipping. It should be in Friday or Saturday. I'll let you know how well it works.
Wow! I can't believe that I missed this post... Thanks I like the cake! However I don't think 62 candles would have fit on it. Probably would have melted it!