I have two maxim dense gen 6 CQB telescoping stocks with buffer springs. Both have the special buffer spring that's needed but you will need to buy the buffer itself. Go on any AR easy to install just replace your buffer tube. Great for SBR setup. 


retail for $400 each with the buffer. you can use the JP silent buffer system or others in it  

 

asking $475 for both or $275 each

text me at 8six5-3one8-nine6nine3