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Dust cover won't stay closed
- Thread starter Cwm9
- Start date
....retention is dependent on the spring loaded detent ball and it's ability to move freely for the full range of it's design.
DD uses PLASTIC dust covers?! Oh For F@#%s sake.
- Nov 3, 2010
- 9,348
- 19,349
It looks like the plastic cover is bowed out....
I would simply replace it with a metal one and not start filing on the receiver.
I would simply replace it with a metal one and not start filing on the receiver.
...an astute observation
...In viewing the attached image from left to right it appears there is a misalignment issue with the door and it's latch in relation to the receiver port dimensions. The red box shows the deformation of the plastic area holding the detent ball contacting the left edge of the ports chamfer cut, the white box shows the referenced "offset" of the detent balls center to the chamfer cuts center. The blue boxes (based on image) appears to indicate the door may have some free space at front where the rod enters the retention nub of the receiver. IF there is a sufficent amount of free space travel there, bending the spring to the right might be enough to keep the door forward to align it correctly with the ports chamfer. The purpose of the chamfer is to allow the detent ball to properly "center" itself with minimal force. The image quality does not allow me to determine if there is a washer or c-clip between the door and the receiver retention nub, but if there is, moving it to the rear nub could be sufficient to push the door forward to better align the detent with the port chamfer.
...despite all of the above cited, if it's a new rifle purchased online or off the shelf, I recommend you exercise the DD warranty first to resolve your issue before attempting any of the above....
Attachments
The detent is clearly going where it's supposed to go, look at the contact mark on the receiver. Misalignment is not the issue....an astute observation
...In viewing the attached image from left to right it appears there is a misalignment issue with the door and it's latch in relation to the receiver port dimensions. The red box shows the deformation of the plastic area holding the detent ball contacting the left edge of the ports chamfer cut, the white box shows the referenced "offset" of the detent balls center to the chamfer cuts center. The blue boxes (based on image) appears to indicate the door may have some free space at front where the rod enters the retention nub of the receiver. IF there is a sufficent amount of free space travel there, bending the spring to the right might be enough to keep the door forward to align it correctly with the ports chamfer. The purpose of the chamfer is to allow the detent ball to properly "center" itself with minimal force. The image quality does not allow me to determine if there is a washer or c-clip between the door and the receiver retention nub, but if there is, moving it to the rear nub could be sufficient to push the door forward to better align the detent with the port chamfer.
...despite all of the above cited, if it's a new rifle purchased online or off the shelf, I recommend you exercise the DD warranty first to resolve your issue before attempting any of the above....
Deburr the area on the dust cover around the detent ball so there isn't a big chunk of material pressing against the bolt carrier. That's it. This talk about spending $20 and a week for shipping, or whatever time and effort in a warranty - it's a dust cover, just fix it and be done.
DD going down hill fast. I'd say regardless of it working, I'd replace it. They are cheap. Or...
Story be told "real sniper rifle" fdic bank assassin part time gumbroker seller has one of a kind special dust covers you can FO right now for $287.50
Story be told "real sniper rifle" fdic bank assassin part time gumbroker seller has one of a kind special dust covers you can FO right now for $287.50
Fast? They've been using plastic dust covers for quite a while. The guns we use at work all have them, and they've been just fine since 2015.
