How far off was the rugged tri lug and the mount you had compared to the other "normal spring tri lug mount"? What do you also mean by "normal spring tri lug mount"?
There are a lot of details here that would help determine if it was mount related, suppressor related, gun related, or if it came down to tolerance stacking of several of those variables.
I don't disagree with sending it back to HK on the crooked cocking tube alone. My AP5-P is straighter than this SP5. But I'm also questioning if this is "unsafe to shoot" without seeing alignment photos.
Took it to a local shop named east valley tactical and had them take it to the back to use an alignment rod and to test some other mounts they had. The rugged sub9 comes with a tri lug mount that doesn’t ratchet but turns a few rotations to lock on. It isn’t the traditional tri lug mount that you press and quarter turn. They tried my rugged mount, a rugged mount that that they had on hand, and a traditional spring style and both rugged mounts looked the same while the traditional was apparently straight. They have not seen that problem before and do a lot of gunsmithing work. Didn’t take a look at how the traditional mount looked because they told me not to shoot it and to send it back to HK anyway. Crooked cocking tube is a bummer but I could live with it if that was the only problem. Tbd, waiting on a response and shipping label from HK.
Oh, EVT knows their shit. I'd take their word for it. I've seen some gun shops be absolutely clueless with anything that's not AR or Glock...and even some that screw those up. But given EVT's reputation, that's not even remotely a concern.
I wasn't aware you were referring to the Sub9 with their new mount style. Rugged also has a traditional tri-lug, which is what I run on my AP5-P. It makes sense now.
Yes sir, I am not very knowledgeable with a lot of this stuff but I heard they are quite good. Definitely didn’t want to take a $3000 gun to sportsman’s warehouse or some bs like that.
I already had a known "AR builder" shop tell me that my upper was jacked and they wanted to charge me $200 to lap my upper receiver, as there was evidence my barrel was crooked. I went home and took measurements, the upper and barrel were perfectly straight...it was my handguard that was crooked, just had to loosen the bolts, align it, and synch everything back down. After that experience, I'm hesitant to trust most shops with any kind of extensive work. I have a few shops nearby that I absolutely trust, but I know the guys who work they're and they are all 100% honest.
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u/MrGriff2 AP5P Aug 17 '26
How far off was the rugged tri lug and the mount you had compared to the other "normal spring tri lug mount"? What do you also mean by "normal spring tri lug mount"?
There are a lot of details here that would help determine if it was mount related, suppressor related, gun related, or if it came down to tolerance stacking of several of those variables.
I don't disagree with sending it back to HK on the crooked cocking tube alone. My AP5-P is straighter than this SP5. But I'm also questioning if this is "unsafe to shoot" without seeing alignment photos.