aps2 or model hopup options

@ bitchtits: yes sir i will be acquiring this rifle secondhand
thank you sir for giving a speedy reply;right now looking for pdi replacement hopchamber to make the rifle more efficient in terms of range
@ silentscope: i am refering to the maruzen aps2 o.r. version sir

this is the link
http://www.redwolfairsoft.com/redwolf/airsoft/Sniper_Rifles_Maruzen_APS_2_OR_Bipod_Set.htm

let me clear the question sirs;is it possible to replace the fixed hopchamber with a better adjustable hopchamber when i get this rifle?

@ silentscope: thanks for the speedy reply sir;at last i can think about acquiring this cool weapon system; now; to buy the aps2