hitmanNo2 Posted September 4, 2017 Report Share Posted September 4, 2017 Are there different generation mags? It looks like a 30 rounder but shorter than other 30rd Sig mags I've seen. Link to post Share on other sites
Dj_komodo Posted September 4, 2017 Report Share Posted September 4, 2017 Hope they make the magazines translucent with mock bullets... Link to post Share on other sites
renegadecow Posted September 5, 2017 Author Report Share Posted September 5, 2017 Looks like it is indeed a 553. Recoil spring is up front. Link to post Share on other sites
blobface Posted September 5, 2017 Report Share Posted September 5, 2017 That pile of springs hurts my brain Link to post Share on other sites
DarkLite Posted September 5, 2017 Report Share Posted September 5, 2017 That's Swiss engineering for you.Still, nice to see they've replicated the FCG to a tee, that three round burst is tasty. Link to post Share on other sites
BioRage Posted September 5, 2017 Report Share Posted September 5, 2017 Don't be so picky with full travel nonsense, you need to rejoice that there's a new gbb that's not the same m4 or ak That being said I'm confident with ghk in the near future for their g3 and mp5, since they got burst down packed. #hype Link to post Share on other sites
renegadecow Posted September 5, 2017 Author Report Share Posted September 5, 2017 I respectfully disagree. The game is gas blowback. If the bolt only goes back half way then it's half baked. Link to post Share on other sites
vorpalbunnie Posted September 5, 2017 Report Share Posted September 5, 2017 I respectfully disagree. The game is gas blowback. If the bolt only goes back half way then it's half baked. Yeah, the Sig 55X series of rifles is one of my favorites, and to get a limited edition GBB is awesome...but I'm getting more upset every time I see it. It's hard to explain, but the principle of it having this realism flaw is what hurts. It's corner cutting in a premium product. Link to post Share on other sites
hitmanNo2 Posted September 5, 2017 Report Share Posted September 5, 2017 I advise you not to go and view the Vickers Tactical video on the RS 552 with that glorious high speed footage of the bolt slamming against the back of the receiver. Link to post Share on other sites
blobface Posted September 5, 2017 Report Share Posted September 5, 2017 But if W&S made it work, why are we speaking about this as if it's a death sentence? Until we get hold of one it seems a bit premature to assume it can't be made full travel? Link to post Share on other sites
DarkLite Posted September 5, 2017 Report Share Posted September 5, 2017 But if W&S made it work, why are we speaking about this as if it's a death sentence? Until we get hold of one it seems a bit premature to assume it can't be made full travel? Hopefully, GHK do it sensible and make it full travel but shipped with a short-stroke buffer. That would be the best of both worlds. That being said, I'm sure they won't, because if there's one thing that airsoft manufacturers love to do, it's not be sensible. Link to post Share on other sites
hitmanNo2 Posted September 5, 2017 Report Share Posted September 5, 2017 It's so similar to their AK recoil setup, gas tube recoil spring aside, I would be shocked if they changed it. Link to post Share on other sites
DarkLite Posted September 5, 2017 Report Share Posted September 5, 2017 It's so similar to their AK recoil setup, gas tube recoil spring aside, I would be shocked if they changed it. The GHK AK system can't be run without the short-stroke buffer. You have to replace the bolt and hammer or it will lock up on the first shot. Link to post Share on other sites
hitmanNo2 Posted September 5, 2017 Report Share Posted September 5, 2017 Yeah, I'm just saying GHK didn't bother with full travel there, I doubt they will here. Link to post Share on other sites
DarkLite Posted September 5, 2017 Report Share Posted September 5, 2017 Yeah, I'm just saying GHK didn't bother with full travel there, I doubt they will here. My mistake. FWIW I think you're bang on, I'd be VERY surprised if GHK made it a full stroke with a buffer. Link to post Share on other sites
blobface Posted September 5, 2017 Report Share Posted September 5, 2017 Let's hope they will. They have surprised me many times, like the AUG, this gun, and the new light weight mags, perhaps they will take this feedback too. However, unlike the AK this locks open, I can't see how a system can lock a bolt at two different positions easily? Link to post Share on other sites
Brigg Posted September 6, 2017 Report Share Posted September 6, 2017 my own thoughts, based on experience building my own gas blowback guns are this. You can have full travel or you can have a realistic firing rate. designing around green gas or even co2 is a measure of give and take. the pressures of any magazine containable gas are nowhere near the pressure of the gasses developed by smokeless powder. Green gas can only perform so well. you have limited volume and you have to use that appropriately. it does not have enough pressure in a loosely fit system (aka removable magazine) to compress a firearm strength return spring. So, a compromise has to be made somewhere. you can have a full travel bolt like the WE AK, but have an unrealistically slow rate of fire (and the we ak is very slow comparatively), or you can cut down the distance the bolt moves and maintain the realistic rate but lose out on some aesthetic bolt travel. It seems maintaining the rate of fire was what ghk decided to do. And it has its merits. Link to post Share on other sites
Dimitri MdP Posted September 6, 2017 Report Share Posted September 6, 2017 You can have full travel or you can have a realistic firing rate My WE AK with FG-Airsoft's recoil buffer spring has the exact same RoF of a real AK while keeping the full travel. Link to post Share on other sites
Brigg Posted September 6, 2017 Report Share Posted September 6, 2017 the recoil buffer probably cuts down travel when its firing .heres a comparison of the we and real steel. we aksu: real aksu: Edit: this is the fg recoil kit. from the video it clearly both cuts down the travel, and still doesnt have the correct rate of fire (still too slow). it speeds it up 25% by cutting out the last 25% of travel. Theres no cheating physics. Link to post Share on other sites
Dimitri MdP Posted September 6, 2017 Report Share Posted September 6, 2017 Just checked to be sure. with FG-Airsoft's recoil buffer, Map Pro (propylene) gas, 16ºC, 93% humidity at sea level. Custom built WE RPK RoF: 683 RPM Real RPK RoF: 600RPM. Real AK-74 RoF: 600-650RPM. Real AK-74U RoF: 730RPM.The kit reduces travel distance by half a centimetre, but provides about 35% faster RoF by noticeable increasing the bolt forward movement speed---------edit: Here's the video by FG-Airsoft, just so you can check the speed. My results were slightly higher, probably because of the fine tuning and the shooting conditions (primarily the gas used)https://youtu.be/LMq-6bb5tHA?t=3m14s Link to post Share on other sites
renegadecow Posted September 6, 2017 Author Report Share Posted September 6, 2017 @Brigg Nope. The FG buffer or my DIY urethane buffer puts it at normal travel which is about 1cm from bottoming out. Remember, a properly tuned AK isn't supposed to have the back of the bolt meet the trunnion or you get receiver death. And mine does 700rpm. Though the AKS74U (real) runs much faster because it ditched the rate delayer on full sized models. No way getting there except maybe stiffer springs and higher pressure gas. Link to post Share on other sites
renegadecow Posted September 6, 2017 Author Report Share Posted September 6, 2017 But if W&S made it work I wouldn't quite call that as working seeing the damage it does to the bolt in just a few shots. Ideally it needs a new bolt with longer guide lugs that won't jump past the rail when firing. Link to post Share on other sites
Zereck Posted September 6, 2017 Report Share Posted September 6, 2017 Wouldn't the rubber seal on SIG slow down the bolt as the charging handle goes through it? Link to post Share on other sites
hitmanNo2 Posted September 6, 2017 Report Share Posted September 6, 2017 It doesn't have to have a proper rubber seal. Could be a token one with a large enough slit for the bolt to travel merely brushing it. Link to post Share on other sites
renegadecow Posted September 7, 2017 Author Report Share Posted September 7, 2017 G&G was able to pull it off and that's just an AEG with a lightweight dummy bolt. Link to post Share on other sites
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