15 replies to this topic

[KWChris]

I bought an Sr 10 thinking i would do more outside play. I went to my first CQB style game and love it, but found that the SR10 was a little long for me. I was thinking of just putting together a SR7 or SR5 upper and change them out on the SR10 depending on the type of play I will do. Is that possible? Is the cost difference between the parts and a new SR7 even worth the time? The field I play out allows 400fps for CQB on semi only.

In your opinion should I do that or just buy a SR 7 or maybe even wait for the new line to come out and get one of the CQB rifles?

Thank you for your time.

[greatwatermelon]

All KWA lower and upper receivers are interchangeable. Whether you have a SR7 upper (SR5 has been discontinued for a while) or any other KWA AR, the upper will fit into your SR10 lower without a problem. In fact, that is exactly what I did with my SR10 and my SR7 when I had electrical issues with my SR7. Just swapped my SR7 top onto my SR10 lower... and worked really well.

I'd say its up to you have soon you need a CQB rifle. If you can wait that long, you'll be saving yourself over $100 if you purchase one of the CQR series rifles coming out in 2nd Quarter, which is fairly soon. On top of that, you can still swap the CQR upper onto your SR10 upper to have to full metal body.

[kwaispro727]

If you really don't want to wait to buy one of the new CQR rifles I would buy the SR7.  Otherwise, I would definitely wait.

[niko_gpsy]

Having a second rifle around is always nice.

[superfrog]

Buy the Sr7.

[KWChris]

Thank you all for your replies.

Another question I have is that someone I know also mentioned the option of replacing the RIS, Outer Barrel, and Inner Barrel to change the SR10 into basically an SR 5. It sounded like a great option, but I would like to know what you all think? Are there any additional parts needed on top those three items?

Is it easy to change those back and forth? I was thinking when the new guns come out I could change the SR10 back and just move those parts to know the new CQR guns.

Thank you all for your help and feedback.

[gcw360]

It's not that hard to make the switch but not practical, IMO, to go back and forth. Also, if you really meant SR5 vs SR7, the SR5 is discontinued for now and therefore the parts may be difficult to get.

[kwaispro727]

I think you should buy another rifle.  It's always good to have an extra to use encase something goes wrong with the other

[superfrog]

Not to mention the need to change the cylinder each time.  The Sr7 cylinder plays well with linger barrels but I don't think it works the other way around.  Another option is to buy a used 5 or 7 for less than 200.

[KWChris]

Initially I wanted to buy an SR 7 and upgrade the spring, but I liked the length of the SR 5 (no jokes please ). When i first started this I figured I would buy the SR 7 and changeout the RIS, O Barrel, and Inner Barrel to get to be a SR 5, plus add a spring to get more fps out of it.  So now instead of doing a spring upgrade to get more fps out of the SR 7 I started thinking i could just convert my existing SR 10 over and add the Ris, O Barrel and Inner Barrel.

[gcw360]

superfrog, on 23 March 2012 - 06:30 PM, said:

Not to mention the need to change the cylinder each time.  The Sr7 cylinder plays well with linger barrels but I don't think it works the other way around.  Another option is to buy a used 5 or 7 for less than 200.

If you go with the stock 0.5 KWA cylinder that's in the SR10 you will see a significant drop in FPS going to the SR5 length.  In my case, since I have an older SR that had a 0.5 type cylinder, when I changed to the type 1 (that later came with the SR5 and is in the SR7 and CQB now) I jumped from 335-365.  No spring change, just the cylinder.

Please note that the spring that came in the first SR5's may not be what ended up in them once the cylinder switched from the .5 to the type 1.  Therefore, I would expect potentially a lower FPS than the 335 I mentioned above...just a guess though.

[KWChris]

Thanks alot for the explanation. I think im just going to go ahead and get a SR 7 since it seems to be a big headache to modify the SR 10. Since my field allows 400 fps should I put a different spring in it or just run it stock? I planned on also getting a MOSFET to protect the trigger and run a 11.1 LIPO in both guns.

Thanks again for all the information I really appreciate it.

[gcw360]

Run stock and hold off on any mods like the MOSFET until you pass the 45 Day warranty.  This way you learn about the gun and then can decide if upgrading the spring is what you need or want.

[superfrog]

I agree with gwc.  I am using .28s in my stock Sr7 and it is fine for woods and field play.  Yes, you gave to get a little closer than a 10, but that makes it fun, and tests your skills.  That said I am also using rhop which gives a bit more range over completely stock.  Also, you have to be careful which battery you run in a stock 7. 11.1 with above 1000 mah tend to overcycling a lot.

[KWChris]

What typically causes overcycling? I planned on waiting until after all warranty has expired before I add the MOSFET and LIPO.

[superfrog]

Lipo that is to strong for spring.  You can use lipo from day one but make sure it is in spec and no problem. You don't need mosfet if you stay in spec.  Read the forum a bit and you will see threads about overcycling and feeding problems. Thus will give you a lot of info on this.  Read the threads.