Advanced Armament has some great 25% off sales going right now, their flat rate shipping is $10 on any size order...
Here is a link to their accessories section where you can click around, I noticed everything from complete 5.56/300 AAC uppers to reloading die sets and various accessories all discounted the same 25%. http://www.advanced-armament.com/Accessories_c_30.html
These products in particular stood out since they seem to be selling for MSRP pretty much everywhere else, the Geissele trigger in particular...
- Geissele G2S trigger (normally $165, on sale $123.75): http://www.advanced-armament.com/MAGPUL ... p_641.html
- Magpul M2 non-windowed 30 round PMAG (normally $9.95, on sale $7.46): http://www.advanced-armament.com/MAGPUL ... p_641.html
- BLACKOUT Flash Hider, 30 caliber; 5/8-24 threaded (normally $59.95, on sale $44.25): http://www.advanced-armament.com/BLACKO ... p_450.html