Bought this part last year. Shot approximately 75 rounds with it attached and decided to go a different route. JP’s website has these for $70.
http://www.jprifles.com/buy.php?item=JPGS-1
Will sell for $50 shipped. Discreet PayPal preferred to k5jacksman@yahoo.
If you have any questions feel free to ask. Thanks,
-Jax
