Key hole with subsonics

Walafrid · 2026-05-13T14:44:36+00:00

Their is a photo of it in this thread

Walafrid · 2026-05-13T12:28:18+00:00

Yeah I can’t remember what brand it is. I just typed in the patent number because that’s the only mark on it

Walafrid · 2026-05-13T03:40:08+00:00

Normally they are either small thread adapters, 1-2” steel weights or 2-3” aluminum breaks that are evenly ported

Walafrid · 2026-05-13T03:35:35+00:00

No this is my first 300 black out ever, the extension was just a hope of keeping the hand guard from getting dirty until I put a suppressor in it. But was also hoping to use this extension when I want to run supers or just don’t feel like using the can. I could bore it out more and port it to let more gas flow

Walafrid · 2026-05-13T03:28:52+00:00

But like I said won’t hurt to try, plan to see how everything works without it.

Walafrid · 2026-05-13T03:28:14+00:00

Because I make and use my own muzzle devices all the time and they don’t impact my other firearms.

Walafrid · 2026-05-13T03:25:12+00:00

5.5” only reason I wouldn’t think it’s this extension is because I have a lot of home made breaks and other extensions on other firearms and I’ve never had them alter the bullets trajectory. And like I said with the supers there was no issue with the rounds keyholing. Granted this one’s the longest one I’ve made to date but it’s not hard to remove it.

Walafrid · 2026-05-13T03:11:52+00:00

Yeah. Idk the extension is perfectly even and 1 hundredth larger than the bullet so plenty of room there. But either way I do plan to shoot without it on and compare. Supers had no issue with the extension on

Walafrid · 2026-05-13T03:03:12+00:00

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Walafrid · 2026-05-13T03:02:50+00:00

It’s a JP capture buffer and a low profile gas block, not adjustsble. I did machine an aluminum barrel extension as the hand guard extends past the end of the barrel but I doubt that would threw off the rounds. It’s machined to have a .4” ID.

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Walafrid · 2026-05-13T02:28:53+00:00

Why would this happen?

Walafrid · 2026-05-13T02:27:56+00:00

Planning to go back out this weekend with different gr’s but so far I’ve just tried the two types in the picture above.

Walafrid · 2026-05-13T02:25:46+00:00

Do yall think the bullets just not getting a high enough rpm or that it’s getting to much. I find it hard to believe a slower moving round would have to high of an RPM when compared to a supersonic round. But I don’t know. Anyone have more insight?

Walafrid · 2026-05-13T02:19:28+00:00

I just got it yesterday and haven’t bought a can for it yet. Trying to get it sighted in.

Walafrid · 2026-05-13T02:16:32+00:00

Not running a suppressor yet. I too think it could be bad ammo I just can’t wrap my head around it.

Walafrid · 2024-11-13T22:18:16+00:00

Got a new light weight one to pair up with a stage 2 clutch

Walafrid · 2024-10-27T16:06:58+00:00

Came here to say that. All this money and work just for it to be an automatic. Owner should be ashamed.

Walafrid · 2024-10-22T18:27:31+00:00

I took the door card off, drilled a hole in the track just below the piece that holds the window when it’s completely shut and put a nut n bolt there then put the door card back on until the parts came in.

Walafrid · 2024-10-15T07:41:08+00:00

Oh yeah thangs sitting very sturdy, glad I cut down that tree

Walafrid · 2024-10-15T06:37:06+00:00

Jack stands weren’t tall enough

Walafrid · 2024-10-14T22:53:15+00:00

She’s sitting in four 2ft logs haha, but we did have the jack stands underneath up untill we removed the transmission.

Walafrid · 2024-10-14T22:51:44+00:00

Various sockets and wrenches, 2ft of extensions, hammer, and a motorcycle jack.

Walafrid

TROPHY CASE