I finally completed my lower build with a aero precision lower and s&j lpk and s&j buffer and buffer tube. Slapped my Norinco CQ-A upper onto it and had it out the range yesterday. Compared to my Norinco Lower and my buddy's Daniel Defense my lower makes a pretty loud twang sound when it cycles. Does anyone have any experience with a Twang Buster like this brownells.com/rifle-parts/receiver-parts/buffer-tube-parts/buffer-tube-hardware/ar-15-m16-twang-buster-prod32505.aspx and do you know of where I can get one in Canada without paying too much it's a $6.00 US part so I'm hoping I can get it it for less than 10-15 cdn.
Thanks
Thanks


















































