Here is my own AR-15 Pistol Project:
http://quarterbore.com/ar15m16/index.html
Note, this is a Non-Ban AR-15 pistol built on a new stripped Bushmaster lower with Bushmaster FCG parts. The pistol buffer is from Model 1 sales. The upper receiver (as shown in the pic above) is a DPMS side cocker which uses a FAL style charging handle on the left side of the receiver and it makes for a handy bolt handle for ths project. The Barrel is from Kurts Kustom here and it is a 10.5-inch Douglass barrel in 300/221 Fireball (300 Whisper clone) and it was built without any gas port making this a perminant bolt-action upper. The barrel is threaded and includes a Gem-Tech TPR-S Bi-Lock as this is a silencer I plan on adding to my collection for my AR-10s and an eventual full-blown SSK 300 Whisper. The barrel is mounted to the receiver via one of Knights Medium Long FF RAS tubes and the bipod I use with this pistol is one of the Harris Short BR bipods.
This pistol was built specifically for hunting deer here in PA as we can not use semi-autos for hunting but we can use pistols. The 300 Whipser does a very good job of getting better then 30/30 performance (as compared to a comparable T/C Contender in 30/30). I just have not had the time to get a scope and start working with this project due to a new job and baby over the past few months... I hope to have some loads ready for this fall!
Now, I do also have a 11.5-inch barrel with all the extras I need to assemble a semiauto upper for this pistol on 9/14. I will not be converting this upper to semi as I do have a use for her as she is but I do want to try out a semiauto AR-15 pistol as well.