i have a 510 u/s sporter /its regged. the stock is the rubberised version. i love the rifle /not so keen on the stock, so i bought a wooden 410 stock s/hand. it came with a adjustable butt plate. this suits me fine . i use jsb 10.34 heavy pellets they work the best for me. i used too have normal 510 carbine i loved that too .but sold it on a year or so ago. mine is just under a year old and i payed £750 for it. i will deff keep this one it does all i want at present shooting bench rest competition with it ,, it s very accurate.