[delta76]

Originally Posted by m102404

http://www.airsoftparts.ca/store2/in...oducts_id=1411

Also, you might want to consider a setup like this:
- CQBR outer barrel, CQB inner...set to 340-ish
- CQBR outer barrel, silencer, M4A1 (or touch longer sig length) tightbore...might shoot 380-ish with the same mechbox.
- same upper, lower, mechbox, motor, etc...

Setup each inner barrel on it's own hopup unit.

Takes just a minute to switch configs...indoor FPS short gun, outdoor usable longer gun. Same grip, rails, sights, etc... Over the past year or so I've setup about a half dozen M4's that way.

You didn't specify which model rifle you're shooting...so it's a bit hard to discuss different setup options.

Tys

Any concern about cylinder porting with this setup?? Would this idea work with a 300mm barrel for CQB and a 363mm barrel for field use? Would the shorter barrel be standard 6.08?