RW's Systema Mp5 PTW Review

[trevor]

it pisses me off that they chose to make the cylinders different. I know it is a way to make more money but that alone would stop me from buying it-even if it had the saem gearbox as the M4's.

[Blastyman]

Originally Posted by trevor

it pisses me off that they chose to make the cylinders different. I know it is a way to make more money but that alone would stop me from buying it-even if it had the saem gearbox as the M4's.

Its probably from a purely technical aspect I think due to size and placement issues.

Its quite possible it physically couldn't use the same cylinder without sacrificing authenticity.

[LUTNIT]

Also I thought there was rumors of M170 cylinders. The M150's balloon the current M4A1 cylinders because the walls aren't thick enough, that new cylinder design looks FAR stronger. If SystemA can sell standard ver.2 mechboxes prebuild with M170 springs, wouldn't surprise me if they release em for the PTW's eventually, just can't use the same M4A1 cylinder design.

[kullwarrior]

Originally Posted by LUTNIT

Also I thought there was rumors of M170 cylinders. The M150's balloon the current M4A1 cylinders because the walls aren't thick enough, that new cylinder design looks FAR stronger. If SystemA can sell standard ver.2 mechboxes prebuild with M170 springs, wouldn't surprise me if they release em for the PTW's eventually, just can't use the same M4A1 cylinder design.

why would you need a M170? that's basically half the power of 22lr, pretty sure for training you would need ballistic armor at that point

[kmsakura]

do they use ballistic armor for simunition? because i thought those hit allot harder. then again i don't know anything about it. (runs to google)

[Fox Hound]

do the cocking function work like the real steal?

[MadMax]

I didn't notice any switches in the cocking tube when I pulled the top off. I wouldn't know if their display model was missing parts though.

The M4 and MP5 have signficantly different space requirements up top. They may have added bulk to the cylinder so they could reduce cross secton in the receiver casting and register to the cylinder assembly. Big variations in wall thickness in castings can cause practical problems like uneven cooling and cracking.

That being said, the springs are pretty easy to change in a cylinder assembly. It wouldn't be much of a benefit to swap an entire cyl assy to change fps when you already have to partially diassemble the top to get at the cylinder. Changing out the spring would be a small increment in trouble to change fps.

Judging from how the top was put together, I'd hazard a guess that it'd take around 5min to get at the cylinder assembly. Not super long and not a heap of little parts, but not as quick as one touch takedown on a M4.

[kullwarrior]

Originally Posted by Fox Hound

do the cocking function work like the real steal?

you can do the 'ride the bolt' if thats what you meant. as for the anti-dry fire its highly likely thats how it''s going to be done, but the proto does not have anti dry fire