I am looking at different stock adapters and this one looks promising and was wondering if anyone has used it or have opinions on it. Thank you in advance. I am also looking at the RAI adapter but I am not concerned with aligning for cheek weld.http://www.jsairrifles.com/P-Rod-AR-Stock-Adapter_p_24.html
It looks like JSAR adapter incorporates the crosman end cap. ie no problem with the bolt loosening up over time.