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DPMS Reduced Recoil Spring - p320

49K views 32 replies 22 participants last post by  Dholiday666  
#1 · (Edited)
I received the recoil spring reduction system for the p320 compact from DPM Systems (Greece). I'm excited to try it out in the next week. Has anyone else shot this before? I'll try to upload pictures tomorrow. So far, it looks like a good upgrade from the factory spring sytem as it doesn't need to be oriented to allow for proper reassembly.
 
#3 ·
The 320 sub compact I have had a warning included. Align the recoil spring with the holes in up and down position.(actually talked about design difference at point where rod part sits towards the rear of gun,but the holes go in position mentioned.) I had read some who did not follow this had problems with the gun function. There may have been a change since I got my sub compact. There is no warning on the compact for the recoil spring.
 
#5 ·
I feel the recoil from my full sized p320 is rather soft compared to other 9mm non-metal guns I own; perhaps there is a big difference with the compact model. In addtion to a GG trigger, the only other change I made was a steel guide-rod and 1911 spring.

I have tried the DPMS system on my Glocks; didn't like it. To my hands, not enough discernible reduction in muzzle flip or recoil to warrant the price compared to a simply heavier guide rod with alternate spring weight. Additionally, I had problems with feed failures. Again, this was with Glocks; your mileage may vary.

Please keep us updated on how it works for you. Good luck.
 
#12 ·
I went to the range today. I shot 200 rounds of Winchester FMJ 115 grain 9mm luger. I switched between the light and medium springs and the stock captured spring. The medium spring is very similar to the stock spring system in terms of recoil and muzzle flip, yet it felt a little different. The soft spring, however, is very nice and does its job well to reduce felt recoil and muzzle flip. I was able to stay more on target and was able to have faster follow-up shots. I had 0 failures of any kind the whole session. Now, I'm really wishing I had a romeo sight on my p320 to make better use of the reduced recoil/flip >.<

I kinda wish they made the medium spring a little lighter/softer...or included a second light spring. I don't think I want to even try the heavy spring. Since I only shot probably ~70 rounds through either spring, I'd assume there will be some break-in with the springs with another few sessions. The stock spring I used today only had ~90 rounds on it before this.

For now, I've put back in the stock spring and took out my curved advanced Apex trigger in preparation to send the gun in for the 'upgrade'. If I shoot the DPM systems' spring more, I'll post an update if the springs soften up a little or if I have any failures.
 
#13 ·
Shot another ~250 rounds through it with the DPM Systems spring, and I had 0 issues with the gun. In fact, I've never had any issues with the gun other than a little spot of failure to return to battery if I rode the slide back, but that was fixed with firing a few magazines of ammo. I have been cleaning the DPM Systems spring after every time I've gone to the range, so I can't say how reliable it is/or would be in a war or whatever situation you can imagine. But, I am confident that the system will continue to work as long as I maintain it. I plan to retire it from duty after 1000 rounds, however.
 
#14 ·
Shot another ~250 rounds through it with the DPM Systems spring, and I had 0 issues with the gun. In fact, I've never had any issues with the gun other than a little spot of failure to return to battery if I rode the slide back, but that was fixed with firing a few magazines of ammo. I have been cleaning the DPM Systems spring after every time I've gone to the range, so I o.ocan't say how reliable it is/or would be in a war or whatever situation you can imagine. But, I am confident that the system will continue to work as long as I maintain it. I plan to retire it from duty after 1000 rounds, however.
I have a DPM spring in my VP9 LE. I love it. It is a difference. I was skeptical at first.......but after shooting it....you really notice a difference. My brother has a VP9 as well and I shot them side by side at the range. Its clearly a favorable experience over the stock spring. My brother ended up putting the VP40 spring in as recommended by HK as an upgrade. He did this as he runs 147 grain most of the time. But 115 grain in both guns and you can clearly tell.

I have had zero malfunctions and I think it was well worth it. ($85) I currently carry a VP9 SK(Replaced my .357 P320) when the drop a thon happened. Im am extremely satisfied with it. I am waiting for a VP9 SK DPM custom spring for my carry as I type.

I found out they make springs for any make if you send them measurments on a sheet they email you. They do not make springs for all guns from a "On hand" standpoint, but they will make a custom one if you send in specs, which I have done for my SK.

We will see how I like my P365 when it comes in. I am not a fan of modifying my carry guns but I have had great success with the DPM spring......I may run it.

Quality is great!! for those who may wonder.

Thx
 
#15 ·
I have run the DPM recoil spring on my Walther PPQ, HK VP9 and my Glock 43 with no feed issues whatsoever. On each gun there was a noticeable difference in recoil allowing me to make faster follow up shots. The quality of this product is outstanding in my opinion. Need to check and see if the one they make for the P320 Compact will also work on my X-Carry. Can't imagine it won't but I'll check to be sure.
 
#18 ·
FWIW (for what it's worth), my P320 subcompact won't reassemble unless the recoil spring tab is oriented the correct way on the rearward area of the underside of the barrel. The tab is, lacking a better way of putting it, more rectangular than square. One of the longer tabs has to be making contact with the barrel in order for me to put the gun back together again. It's always been that way. I'll have to get my camera out and send some photos in to show it to readers of this forum.

Also, please let me know if I'm on target with this discussion, or if I missed the point completely.
 
#19 ·


Went to the range today and shot so well with my X-Carry I've decided I am not going to change a damn thing. Staying stock with everything. This gun is a dream to shoot!
 
#20 ·
New P320 System

I am really interested in this system.

I currently use a P320 RX to play in the Carry Optics division of USPSA. This specific internal modification is legal according to the latest set of rules updated this month of this year.

I am wondering if there are any others that have used this system as well? On the website for DPM Systems USA they have a new version of this recoil "system" that features 3 spacers and 3 springs giving more options to "customize" recoil.

I haven't changed any of the springs in any of my pistols and wonder to what effect this may have. Thank you for any input.
 
#21 ·
I am really interested in this system.

I currently use a P320 RX to play in the Carry Optics division of USPSA. This specific internal modification is legal according to the latest set of rules updated this month of this year.

I am wondering if there are any others that have used this system as well? On the website for DPM Systems USA they have a new version of this recoil "system" that features 3 spacers and 3 springs giving more options to "customize" recoil.

I haven't changed any of the springs in any of my pistols and wonder to what effect this may have. Thank you for any input.
Why do you think it is wouldn't be legal?
It should be.
Also, if running a full size then you tungsten guide rod is almost a no brainer.
 
#22 ·
I second using the tungsten guide rod. It adds weight to the front of the gun and reduces felt recoil. I’m using springer precision’s tungsten guide rod with a 10# Wilson combat recoil spring on my X5 using my 124 Gr 130 PF reloads.

Shoots flat and gets right back on target. Brass just dribbles out of the gun but not malfunctions whatsoever.
 
#30 ·
NO, the P320 modular pistol is great as is, I like to modify and I compete. When adding a compensator to reduce muzzle flip and stabilize for quick follow up shots and using light (average 9mm) loads at 115 grain you can get what is called a stove-pipe...see pic. The comp reduces the pressure to push the slide back and eject properly and reload the chamber, nothing wrong with the gun so the spring kit changes the felt recoil and eliminates the stovepipes, different springs for different ammo and compensators, I love to double-tap chest-chest, chest-head and then eyeball-eyeball, body-shots' with a 9mm don't bring a target down right away, large calibers do. .44 to the floor ! anyways...you swap out the springs till you find what feels good to you and with the DPM springs you 9 different settings according to them by swapping out springs and cups. I'm sure there are better explanation's on here cause I'm just a old Tanker that likes to blow shi* up.
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