More AR build questions

[redrider1]

S&W ARs have take down pins,right?

 

[LockStocksAndBarrel]

S&W ARs have take down pins,right?

https://www.indianagunowners.com/fo...hat-do-they-want-part-2-a-87.html#post6964583

 

[jk1229]

I have the Aero Precision lower and upper which cost 75 each. They are high quality and the fit and finish is perfect. I wouldn't spend more than $100 on a lower because they all pretty much do the same thing. You might want to put your money on the more important parts like the bcg, barrel, etc.

 

[thunderchicken]

Ordered a PSA lower yesterday and trigger group. I will have a trusted gunsmith polish up the trigger so it breaks a little more smoothly. I have decided I will be using a BCM upper reciever with m4 feed ramps, and their BCG. Still on the fence for what barrel to I want. I can't decide between a plain old 16" carbine or 20" rifle length barrel. Kinda kickin around the idea of a 20" in .300blk out or .450 bushmaster. Idk what to do yet

 

[sig1473]

Kinda kickin around the idea of a 20" in .300blk out or .450 bushmaster. Idk what to do yet

I wouldn't suggest a 20" barrel for 300BLK. 16" is the longest I would go.
Good link:Barrel length (What is your favoritie?) - 300BlkTalk