Armaspec Stealth Recoil Spring in Daniel Defense DD5 V4 .308 Winchester
My DD5 V4 .308 Win. MilSpec Brown
The silencer is good enough that I can do so with my bolt action rifle, but with the DD5 it's just a little too loud.
So after some investigation I found that the cause for that little too much may be the cheese grater sound emitted from my buffer assembly when cycling, so I looked into how I can reduce/remove it.
The first thing I found was the JP Enterprises Silent Captured Springs, but JP states on their website that it will not fit into my rifle ("It is also not compatible with [...] the Daniel Defense DD5 bolt carrier due to a lack of clearance for the guide rod").
So I went on searching and finally found the Armaspec SRS, and after contacting them about it they confirmed that it would fit my DD5, and so I ordered one SKUARM253-AR10 Stealth™ Recoil Spring - SRS™-AR10 GEN4 and a necessary spacer SKUARM154-RFL/A5 Spacer A5 for SRS™/SMB™ (<- the image is not correct: it's way shorter).
Stock recoil buffer weight
I was able to replace the stock recoil buffer/spring assembly without any problems using a set of snap ring pliers, and everything semms to work as intended when I pull the charging handle.
So far, so good, but the gun now no longer cycles reliably when shooting.
The problem is caused by a hefty bolt bounce with the SRS, which was practically non-existant with the original setup. Half of the time it bounces and still manages to close so that it can fire, but the other half it will not close completely and lock and will not shoot (and thank god for that!). And those are the times where I need to press the forward assist to fully close it so that it can shoot.
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| Stock recoil buffer/spring assembly | SRS, closing | SRS, staying open |
I sent a mail to Armaspec on 17th of October 2023 with the videos of the problem, and they asked me about all the details of the rifle and told me they will look into it but haven't contacted me yet.
Update: They want me to install an adjustable gas block, that should fix the problem, they say. I'm not so sure - this feels more like a Newton's-Pendulum-problem to me, but I'm just a computer programmer and electronics engineer, what do I know. I tend to buy one from Superlative Arms - I'll keep you updated.
Comments
Hello,
Were you able to get this to cycle reliably? What were the modifications you had to make?
Hi B, I didn't have time for this in the mean time but haven't given up, yet.
In the mean time I have added an adjustable gas block (because I want the gun to work optimally with my Optima and handloaded ammo, not for this problem since I still don't see what this will fix there since the problem also occurs when I just use the bolt release) and I'm currently in the process of manufacturing a metall ring with fitting dimensions to put in front of the ASRS with a rubber ring in between as a dampener so that it will basically look like their SMB. I already have a fitting rubber ring, but you can't assemble the gun with the rubber ring alone, since it will stick. There has to be a hard surface in front of it for the bolt to be able to slide down when assembling the gun.
Does your DD5 have the update BCG?
https://www.youtube.com/watch?v=mMBKI-Ny6Og
Mine has the weight in the back so the back of the bolt is blocked off. I was wondering if the weight will interfere with the Armaspec buffer.
Yes it has the updated BCG and yes it would interfere, but you can remove the additional weight using snap ring pliers.
I did some experimenting with the JP enterprise buffer for AR10 with 3 Tungsten weights along with plastic spacer (chopped down the longer one they included) and the thin metal spacer. I was able to get the DD5 V4 to cycle reliably so far only put 20 rounds through it without issue. I also have the spring kit so I’ll spend some time with that as well.
https://jprifles.com/buy.php?item=JPSCS2-10H3