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Posted: 10/10/2018 11:16:48 PM EDT
[#1]
Also posted this in another discussion, but..
Recieved my Gibbz G9 upper after a month of waiting. A few things; The NFA C5 side charger seems to have the 5.56 size ejection port. I didnt realize this until comparing it to the G9. The C5 upper is also made by Gibbz. But the G9 is compatible with cam pins and the C5 is not (no cam pin machining) With the G9 upper there is plenty of clearance for the MP5 magazines with no modification. I was suprised by this. Adding the G4 gibbz cam pin to the CMMG guard BCG was a bit tight. I found that I did not need to trim the "gas key" at all but I did need to grind off maybe 1mm of the bottom corner to allow the new cam pin to rotate without contacting it. Was able to get 100% reliable feeding/ejection by racking the handle. |
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Posted: 10/19/2018 7:06:09 PM EDT
[#2]
Bump to keep this going.
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Posted: 10/20/2018 10:26:35 PM EDT
[#3]
I picked up some ETS mags that were extremely tight. ETS asked me to ship them back at my expense which I did. New mags are still too tight. Anyone else has this issue?
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Posted: 10/21/2018 6:07:12 PM EDT
[#4]
Tight meaning they won’t drop free easily or you have to really force them in and out? Do they seat properly when loaded and unloaded with the bolt forward ?
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Posted: 10/21/2018 8:26:13 PM EDT
[#5]
Quote HistoryQuoted:
Tight meaning they won’t drop free easily or you have to really force them in and out? Do they seat properly when loaded and unloaded with the bolt forward ? |
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Posted: 10/22/2018 5:34:44 PM EDT
[#6]
Quote HistoryQuoted:. The first set of ETS mags were 1/4" from seating with force. The second set are 1/8" from seating with force. |
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Posted: 10/22/2018 5:54:30 PM EDT
[#7]
Quote HistoryQuoted:
Sandpaper? Quote HistoryQuoted:
Quoted:. The first set of ETS mags were 1/4" from seating with force. The second set are 1/8" from seating with force. |
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Posted: 10/23/2018 7:55:29 PM EDT
[#8]
Quote HistoryQuoted: I could but I would have to figure out which side to take it off. I may just return them and stick with metal mags. |
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Posted: 10/27/2018 8:44:14 PM EDT
[#9]
Will a PSA upper work on the NFA C5 or am I better off with the C5 upper and just assemble to my specs?
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Posted: 10/27/2018 9:26:44 PM EDT
[#10]
Quote HistoryQuoted:
Will a PSA upper work on the NFA C5 or am I better off with the C5 upper and just assemble to my specs? |
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Posted: 10/27/2018 9:27:27 PM EDT
[#11]
Quote HistoryQuoted:
Will a PSA upper work on the NFA C5 or am I better off with the C5 upper and just assemble to my specs? The C5 has a large ejection port, no cam pin machining, looser fit with the mags, is more expensive and at this point is obsolete. The new Gibbz G9 fixed my mag fitment issues over the C5 version, allows for CMMG guard usage, and has a proper 9MM sized ejection port. You can get a blem for $199 |
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Posted: 10/28/2018 12:52:40 PM EDT
[#12]
Quote HistoryQuoted:
Dont get the C5 upper, get a Gibbz G9. Both are made by Gibbz. The C5 has a large ejection port, no cam pin machining, looser fit with the mags, is more expensive and at this point is obsolete. The new Gibbz G9 fixed my mag fitment issues over the C5 version, allows for CMMG guard usage, and has a proper 9MM sized ejection port. You can get a blem for $199 |
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Posted: 10/28/2018 7:33:59 PM EDT
[#13]
Quote HistoryQuoted:
And this upper will work with MP5 mags? Eta - I'm not 100% sure that the ones made prior to the batch released last month will fit MP5 mags or that the blems will be a new one - so call them or email them to be sure. |
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Posted: 10/28/2018 8:08:58 PM EDT
[#14]
Quote HistoryQuoted:
Dont get the C5 upper, get a Gibbz G9. Both are made by Gibbz. The C5 has a large ejection port, no cam pin machining, looser fit with the mags, is more expensive and at this point is obsolete. The new Gibbz G9 fixed my mag fitment issues over the C5 version, allows for CMMG guard usage, and has a proper 9MM sized ejection port. You can get a blem for $199 Quote HistoryQuoted:
Quoted:
Will a PSA upper work on the NFA C5 or am I better off with the C5 upper and just assemble to my specs? The C5 has a large ejection port, no cam pin machining, looser fit with the mags, is more expensive and at this point is obsolete. The new Gibbz G9 fixed my mag fitment issues over the C5 version, allows for CMMG guard usage, and has a proper 9MM sized ejection port. You can get a blem for $199 |
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Posted: 10/28/2018 9:13:30 PM EDT
[#15]
Quote HistoryQuoted: I paid 109 for my C5 and it works great. I have yet to find a gibbs G9 less than 2 bills. Mine is not loose at all. I do prefer the side charge set up and looked at the gibbs heavily before making my pdw. Both are viable options. aimsurplus.com has the C5 upper for $109. I only use POF mags in mine. |
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Posted: 10/28/2018 9:33:31 PM EDT
[#16]
Quote HistoryQuoted:
I made the error of not counting the rear charging option in my post. My apologies. Thanks to both. |
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Posted: 11/2/2018 11:30:49 PM EDT
[#17]
I just ran across this thread and it's relative to my interests.
Do any of you have any suggestions what K length barrels and hand guards would be a good fit? Alternatively, does anyone sell complete G9 uppers? |
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Posted: 11/3/2018 7:49:01 PM EDT
[#18]
Quote HistoryQuoted:
I made the error of not counting the rear charging option in my post. My apologies. |
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Posted: 11/3/2018 7:52:49 PM EDT
[#19]
Quote HistoryQuoted:
I just ran across this thread and it's relative to my interests.
Do any of you have any suggestions what K length barrels and hand guards would be a good fit? Alternatively, does anyone sell complete G9 uppers? I got the AR Stoner 4.5" barrel. Works great |
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Posted: 11/4/2018 6:44:12 AM EDT
[#20]
Quote HistoryWhat did you choose for the FH? Obviously something for a 5.56 won’t have the clearance for a 9mm round.
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Posted: 11/4/2018 7:02:43 AM EDT
[#21]
Quote HistoryQuoted: What did you choose for the FH? Obviously something for a 5.56 won’t have the clearance for a 9mm round. Infact most FHs ive seen arent machined any tighter of a bore than the 1/2" threaded portion. The "9mm FHs" have the dumb 36tpi threads Obviously this wont be true for brakes or anything with tighter bore constrictions intended for 5.56 |
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Posted: 11/4/2018 9:44:05 AM EDT
[#22]
Quote HistoryQuoted: What did you choose for the FH? Obviously something for a 5.56 won’t have the clearance for a 9mm round. hk 3 lug adapter |
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Posted: 11/4/2018 9:47:14 AM EDT
[#23]
Quote HistoryQuoted: Not really true at all. Many 1/2 28 muzzle devices intended for 5.56 work just fine for 9mm Infact most FHs ive seen arent machined any tighter of a bore than the 1/2" threaded portion. The "9mm FHs" have the dumb 36tpi threads Obviously this wont be true for brakes or anything with tighter bore constrictions intended for 5.56 |
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Posted: 11/4/2018 3:33:17 PM EDT
[#24]
That is the same 3 lug adapter i put on mine!! I like it a lot.
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Posted: 11/5/2018 12:25:52 AM EDT
[#25]
Hey. Here is my contribution. Took it to the range and experienced several ejecting issues. By any chance anyone experience this issue? I have a C5 side charger. My build includes 4.5 faxon barrel, blitzkrieg hydraulic buffer, recommended spring, and Spinta bolt.
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Posted: 11/6/2018 2:17:07 AM EDT
[#26]
...
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Posted: 11/6/2018 2:20:09 AM EDT
[#27]
Quote HistoryQuoted:
Hey. Here is my contribution. Took it to the range and experienced several ejecting issues. By any chance anyone experience this issue? I have a C5 side charger. My build includes 4.5 faxon barrel, blitzkrieg hydraulic buffer, recommended spring, and Spinta bolt. https://i.imgur.com/buXJU5om.jpg |
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Posted: 11/6/2018 5:59:52 PM EDT
[#28]
I agree I am running a regular 9mm buffer from PSA
Quote HistoryQuoted:
Try a regular buffer instead of the hydraulic. Quote HistoryQuoted:
Quoted:
Hey. Here is my contribution. Took it to the range and experienced several ejecting issues. By any chance anyone experience this issue? I have a C5 side charger. My build includes 4.5 faxon barrel, blitzkrieg hydraulic buffer, recommended spring, and Spinta bolt. https://i.imgur.com/buXJU5om.jpg |
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Posted: 11/8/2018 3:26:32 AM EDT
[#29]
Quote HistoryNice!!'Thank you! 
ETA: I was looking on New Frontier's website and it looks like ther lower parts kit is out of stock. Do any of you know if any other LPK's are compatible? |
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Posted: 11/8/2018 3:30:55 AM EDT
[#30]
Any parts kit will work
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Posted: 11/24/2018 12:12:27 AM EDT
[#31]
I missed the replies. I figured out my issue. The ejector was loose. NFA should really lock tight that screw. Has been running great after tightening everything down.
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Posted: 11/24/2018 12:12:59 AM EDT
[#32]
I missed the replies. I figured out my issue. The ejector was loose. NFA should really lock tight that screw. Has been running great after tightening everything down.
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Posted: 11/26/2018 5:38:38 PM EDT
[#33]
Quote HistoryQuoted:
I missed the replies. I figured out my issue. The ejector was loose. NFA should really lock tight that screw. Has been running great after tightening everything down. |
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Posted: 11/29/2018 8:24:25 AM EDT
[#34]
Who's has POF mp5 magazines?
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Posted: 11/30/2018 1:47:45 PM EDT
[#35]
I bought a QC5 receiver set with the side-charging upper during their Black Friday sale. Had my eye on one of these for a while and decided to finally go for it.
I ordered a 6.75” ported barrel and 12” reflex can from D3LLC and I’m basically trying to make this as much an “MP5SD clone” as possible. Will have a 13.5” length with the suppressor attached so it should be handy and fun to shoot and being able to slow the regular 115gr and 124gr bullets down to subsonic speeds will be great. Another plus is that if I ever decide to build a real MP5SD the suppressor will work 100% with it... What handguards are people using along with the H&K rubber MP5SD grip and how are they attaching them? |
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Posted: 12/4/2018 5:01:33 PM EDT
[#36]
YHM YHM-9431A Carbine rail
HKparts US made MP5 SD rubber I’ve seen these two used together. I’m Sure there are other options. |
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Posted: 12/15/2018 1:48:11 PM EDT
[#37]
Who's has POF mp5 magazines?
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Posted: 12/16/2018 10:15:25 AM EDT
[#38]
Quote HistoryQuoted:
Who's has POF mp5 magazines? NFA does have the KCI for $35.00. Still in the build process, so I can’t tell you what works. |
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Posted: 12/16/2018 11:16:36 AM EDT
[#39]
I'm in the process of milling my lower. Still need to get the LPK. I have two POF magazines I should have bought more than I did.
I would love to see a video / hear how the build went on the mp5 lower. |
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Posted: 12/20/2018 10:04:06 PM EDT
[#40]
Build Tech Time...
One has a NFA AR9 C5 lower, upper & BCG... Plan is for a Shockwave stock and tube with a 4-5” barrel. What’s my buffer set up? |
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Posted: 12/22/2018 2:48:39 PM EDT
[#41]
Quote HistoryQuoted:
Build Tech Time... One has a NFA AR9 C5 lower, upper & BCG... Plan is for a Shockwave stock and tube with a 4-5” barrel. What’s my buffer set up? Try a SBA3 or something else that will be softer if shouldered. I would use a 7 or 7.5 oz buffer. _ |
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Posted: 12/23/2018 4:08:06 AM EDT
[#42]
Quote HistoryQuoted: You may dislike the shockwave after some time with it. Try a SBA3 or something else that will be softer if shouldered. I would use a 7 or 7.5 oz buffer. _ |
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Posted: 12/29/2018 10:53:18 PM EDT
[#43]
Will the NFA C9 LRBHO upper work with the C5 and MP5 mags?
@83rdrecon Looks you have one on your build? |
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Posted: 12/30/2018 11:24:54 AM EDT
[#44]
Quote HistoryQuoted:
Will the NFA C9 LRBHO upper work with the C5 and MP5 mags? @83rdrecon Looks you have one on your build? There is no where on the follower to interface with a LRBHO. It wasnt a feature that was needed when the mp5 was developed because they trained to lock the bolt back before reloading. Or something. |
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Posted: 12/30/2018 9:22:02 PM EDT
[#45]
Quote HistoryQuoted:
LRBHO doesn't work with 9mm Mp5 mags. There is no where on the follower to interface with a LRBHO. It wasnt a feature that was needed when the mp5 was developed because they trained to lock the bolt back before reloading. Or something. |
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Posted: 12/30/2018 9:41:03 PM EDT
[#46]
Quote HistoryQuoted: So basically $20 more then the slick side for a clue grove down the side of the upper ?? The C5 uppers and the newer Gibbz G9 have been cut wider to accommodate them |
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Posted: 1/3/2019 10:27:16 PM EDT
[#47]
Quoted:
I just finished building this today, not sure what i'm going to do with it, but it looks kool. Takes MP5 Magazines. The only reason i waited for this is because i hate the straight mag 9mm AR's https://carwreckhelp.net/wp-content/uploads/2018/04/20180417_160554.jpg https://carwreckhelp.net/wp-content/uploads/2018/04/20180417_160603.jpg |
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Posted: 1/3/2019 10:33:41 PM EDT
[#48]
Quote HistoryQuoted:
Will the NFA C9 LRBHO upper work with the C5 and MP5 mags? @83rdrecon Looks you have one on your build? |
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Posted: 1/4/2019 1:30:41 AM EDT
[#49]
FYI, I had an issue with the ETS mags working in my C5 lower. I ended up sanding off both of the raised sections on the back of the mags to get them to work.
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Posted: 1/5/2019 9:10:36 PM EDT
[#50]
Took it out for the first time today. Ran flawless from round one. (all the way to round 200) (suppressed)
C-5 lower Matching side-charger upper Kaw Valley bolt Faxon 4" 9mm barrel MVB buttstock 9mm version POF mags SilencerCo Hybrid Standard gunshow reload 115gr 
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