Remember when everyone and an AR15A2?
Remember how long ago it was when an AR15 meant the long 20inch barrel and it was virtually impossible to find an M4 style firearm. AR15 firearms have come a long way, both the upper receivers and the lowers. Trying to find a firearm now that does not have staked parts or is not chrome plated is getting harder and harder. Even the machining on bolt carriers has improved to the point that Direct Impingement firearms are 10xs more reliable than before. All you have to do is pop the bolt carriers out of the guns and you can feel the difference.
Even the average AR15 now is a minute of angle firearm and can still run like a military rifle. Barrel technology on your average AR15 upper receivers has doubled and tripled. I have an LWRC M6A1 rifle that supposedly has a barrel life of about 7500rds but the newer ones are close to 20,000rds. The bolt carrier group is a one piece unit and there has been absolutely zero broken parts on it. Hopefully the only things that will eventually where out anytime soon are the extractor and springs. It’s always wise to keep some of the basic spare parts around no matter what AR15 you own.
What is it? The TAC-PAC is a modular storage system designed to store tactical batteries and other small parts. It consists of an injection-molded housing with interchangeable EVA foam die cut inserts. The housing and insert is closed with a snap-on rubber sealing lid. This is then placed into a tactical nylon storage pouch. Why do I need one? If you have ever searched in a pack or gear bag or pocket or desk for spare batteries or parts, you NEED a TAC-PAC. You will always have spares and always know where they are. Be prepared with the TAC-PAC.
What is it? The TAC-PAC is a modular storage system designed to store tactical batteries and other small parts. It consists of an injection-molded housing with interchangeable EVA foam die cut inserts. The housing and insert is closed with a snap-on rubber sealing lid. This is then placed into a tactical nylon storage pouch.
Why be without spare gas rings or an extractor? A complete bolt can be at your disposal ready to be installed, and the parts necessary to repair the faulty bolt are stored handily for the needed repair. You just supply the level of 
What will fit inside? Each TAC-PAC comes supplied with 2 inserts (1 die cut and 1 blank), a storage pouch, and the hard case and rubber lid. It is a complete storage system. The LE insert holds (8) CR-123 batteries. The MIL insert holds (4) CR-123, either (2) N or (2) AA, and (1) 1/3 N size batteries. 
Why be without spare gas rings or an extractor? A complete bolt can be at your disposal ready to be installed, and the parts necessary to repair the faulty bolt are stored handily for the needed repair. You just supply the level of spares you think you might need. Store your 
Why be without spare gas rings or an extractor? A complete bolt can be at your disposal ready to be installed, and the parts necessary to repair the faulty bolt are stored handily for the needed repair. You just supply the level of spares you think you might need.