Originally Posted by Rusty Lugnuts
IT's a direct replacement and in my opinion the best replacement rubber on the market
Thanks for that information Rusty Lugnuts, I just placed an order for one of those.
So here's what I have ordered to increase the accuracy of my CA M15A4 Sportline Rifle:
1x Madbull Black Python 6.03mm TBB (509mm length)
1x PDI W-Hold hop-up rubber
4x BB Bastard 0.25g white BBs (2000 rounds per bag)
I spent quite a bit of money, but I'm sure it's worth it if it can improve the performance of my airsoft gun. I hope I made good choices in parts and BBs; BB Bastard BBs seem to get universal praise here and sound like the most accurate and highest-performing airsoft BB that money can buy (I'm trusting what you guys say).