delarosa Posted March 1, 2011 Report Share Posted March 1, 2011 (edited) Hi guys, Im looking for a RIS system for the KJW m4, and I found this pic: Notice how the RIS system have a RIS cup in front. However after searching anywhere I only found the similar RIS without any indication that theres room for a RIS cup to hang on to. Isnt the ris in the pic supposed to be a free float? So why is the RIS cup there? Heres and example pic, look at the flat front part with no indication of attaching any RIS cup. Edited March 1, 2011 by delarosa Quote Link to post Share on other sites
elanaiba Posted March 1, 2011 Report Share Posted March 1, 2011 Sometimes people just leave the "cup" there to keep of debris, for look, etc... Quote Link to post Share on other sites
delarosa Posted March 1, 2011 Report Share Posted March 1, 2011 Ow ic, but would it wobble a lot then? Might try to do the same if it isnt going to wobble a lot. Quote Link to post Share on other sites
elanaiba Posted March 1, 2011 Report Share Posted March 1, 2011 If it doesn't wobble it may be because it touches the rail, and this means it negates the free float part of the barrel, as far as I can tell. Quote Link to post Share on other sites
delarosa Posted March 1, 2011 Report Share Posted March 1, 2011 If it doesn't wobble it may be because it touches the rail, and this means it negates the free float part of the barrel, as far as I can tell. The rail you mean the ris? So its better to not use the cup? Another question is, Im new to this free float ris thing, how does it work actually? What I know is, it would attach to the upper receiver. But then it doesnt come into contact with the outer barrel, does this mean the outer barrel would likely to wobble a lot because theres no "support" from the ris? And because the ris doesnt touch the outer barrel, doesnt it put a lot of stress to the "neck" of the upper receiver when the hand is actually holding it when we are in the "shoot" position? Quote Link to post Share on other sites
t_hum Posted March 1, 2011 Report Share Posted March 1, 2011 In a free float system the rail is firmly mounted to the upper receiver via the barrel nut. Some grip the nut radially while others grip it axially. The method doesnt really matter and varies for mfg to mfg. The point is they grip very tightly. The barrel is also held in by the barrel nut. It shouldnt wobble at all. The handguards dont give strength to the barrel is a non-ris setup. In fact, its the barrel that supports the grip. Quote Link to post Share on other sites
brainexploder Posted March 1, 2011 Report Share Posted March 1, 2011 I have to say I am not a fan of the free float. It could be the brand of front end I used on the KJ I just finished building but when it was set and done the barrel had a lot of wobble, about a quarter inch up and down and left an right and if I ever dropped the gun I feel like I could have bent it. I ended up fashioning a "cup" type piece for the front end to hook up the two. Don't think the free float has any real benefits in airsoft since the recoil is so minor and if the barrel is wobbling its probably throwing off your accuracy on full auto more than its helping. Here is a couple cell phone pics. Quote Link to post Share on other sites
def3kt Posted March 1, 2011 Report Share Posted March 1, 2011 Hey t-hum. It's the aabb version of the knights supressor. It has a little bit of rotation, about 1/8" but otherwise is spot on. Quote Link to post Share on other sites
delarosa Posted March 1, 2011 Report Share Posted March 1, 2011 In a free float system the rail is firmly mounted to the upper receiver via the barrel nut. Some grip the nut radially while others grip it axially. The method doesnt really matter and varies for mfg to mfg. The point is they grip very tightly. The barrel is also held in by the barrel nut. It shouldnt wobble at all. The handguards dont give strength to the barrel is a non-ris setup. In fact, its the barrel that supports the grip. Ah ic, now I understand, thanks for the great explanation t_hum! And do you have any recommendation on brand that fits perfectly on KJW M4 for the RIS like this one? I have to say I am not a fan of the free float. It could be the brand of front end I used on the KJ I just finished building but when it was set and done the barrel had a lot of wobble, about a quarter inch up and down and left an right and if I ever dropped the gun I feel like I could have bent it. I ended up fashioning a "cup" type piece for the front end to hook up the two. Don't think the free float has any real benefits in airsoft since the recoil is so minor and if the barrel is wobbling its probably throwing off your accuracy on full auto more than its helping. Here is a couple cell phone pics. Whats the brand if I may know? Im not a fan of wobble, so I would want to avoid it. Thanks all! Quote Link to post Share on other sites
def3kt Posted March 1, 2011 Report Share Posted March 1, 2011 I bought a madbull dd ras and it fit like a charm. I modded a g&p 10.5" barrel to fit the kjw and it together they are perfect. Quote Link to post Share on other sites
delarosa Posted March 1, 2011 Report Share Posted March 1, 2011 I bought a madbull dd ras and it fit like a charm. I modded a g&p 10.5" barrel to fit the kjw and it together they are perfect. I recall dd ras isnt the same model as the picture, but I'll take it as a consideration thanks! If used with the standard barrel, its ok right? Quote Link to post Share on other sites
def3kt Posted March 1, 2011 Report Share Posted March 1, 2011 Yeah. I tried it with both barrels and it fit fine. Im just not a fan of the two piece kjw barrel. Quote Link to post Share on other sites
suicidalsnowman Posted March 1, 2011 Report Share Posted March 1, 2011 I've got an element Noveske free float ris and it fits like a charm. The barrel is very secure as well, I can use flash hider as a tuning fork . Quote Link to post Share on other sites
brainexploder Posted March 1, 2011 Report Share Posted March 1, 2011 There are two. The shorter one is a UTG and its not a free float its very firm. The longer one is designed for a d-boys aeg but the barrel is the stock KJ barrel, the delta ring could be the problem but it feels very snug and tight. Quote Link to post Share on other sites
delarosa Posted March 1, 2011 Report Share Posted March 1, 2011 Yeah. I tried it with both barrels and it fit fine. Im just not a fan of the two piece kjw barrel. Ic, thanks a lot, mine is the cqb version so I actually dont know if the barrel is actually the same, I suppose it is anyway. Quote Link to post Share on other sites
def3kt Posted March 1, 2011 Report Share Posted March 1, 2011 You'll know once you removethe triangle front sight. Mine was the full length barrel which used a funky two piece design. Quote Link to post Share on other sites
delarosa Posted March 2, 2011 Report Share Posted March 2, 2011 I've got an element Noveske free float ris and it fits like a charm. The barrel is very secure as well, I can use flash hider as a tuning fork . There are two. The shorter one is a UTG and its not a free float its very firm. The longer one is designed for a d-boys aeg but the barrel is the stock KJ barrel, the delta ring could be the problem but it feels very snug and tight. Nice options there, but is there any brand suggestions that have ris exactly like the pic I posted? You'll know once you remove the triangle front sight. Mine was the full length barrel which used a funky two piece design. Ic, I'll need to take off the front first then. Quote Link to post Share on other sites
Mister Miles Posted March 2, 2011 Report Share Posted March 2, 2011 Any one use RA-TECH's hop-rubber or tightbore? Quote Link to post Share on other sites
suicidalsnowman Posted March 2, 2011 Report Share Posted March 2, 2011 Nice options there, but is there any brand suggestions that have ris exactly like the pic I posted? Well there's the La Rue handguard that looks pretty similar and this was the only Knight's free float handguard that I could find. Quote Link to post Share on other sites
brainexploder Posted March 2, 2011 Report Share Posted March 2, 2011 Any one use RA-TECH's hop-rubber or tightbore? I have both, the hop up ripped but prior to that I did not notice a difference between it and the stock hop up, tightbore seems to be quality. The velocity reducer they make is junk, flawed design, get t_hum's instead. Quote Link to post Share on other sites
delarosa Posted March 3, 2011 Report Share Posted March 3, 2011 Well there's the La Rue handguard that looks pretty similar and this was the only Knight's free float handguard that I could find. Ah, thanks! Maybe I'll go with this instead Quote Link to post Share on other sites
slipknot1971 Posted March 3, 2011 Report Share Posted March 3, 2011 Hello, i was wondering if there's a 3 round burst kit that can be installed in the Tanio????...thanks in advance! J. Quote Link to post Share on other sites
theprodigy Posted March 4, 2011 Report Share Posted March 4, 2011 quick update on mine. hopup dial broke off and nozzle spring snapped, so i kinda stretched it out and used the longer part. played a game, gun shot fine as it did before. amazing Quote Link to post Share on other sites
delarosa Posted March 5, 2011 Report Share Posted March 5, 2011 @t_hum Is there any news on the complete BCG by cradle? Im waiting for it as not to install each part separately. Thanks! Quote Link to post Share on other sites
t_hum Posted March 5, 2011 Report Share Posted March 5, 2011 We will have pricing very soon. Right now we are trying to get our costs down due to the run being relatively small. Its likely there will only be 100 made and available for preorder for the first run. Previous Cradle customers will get an email when they are made available and notification will be posted here and at other news sites/forums. The carriers will be 7075-T6 with a black hard ano finish. Players with the x/o-ring piston will still be able to drop them right onto the new carrier with the included piston adapter and hardware. (The factory KJW piston will not fit) A complete bolt with reducer, x-ring, and nozzle will be available. No carrier extension is required as the proper length has been built into the carrier body. Quote Link to post Share on other sites
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