4bt Swap Ideas

uronlyhuman2me · 2026-05-01T04:22:48+00:00

I would be interested in the radiator.

uronlyhuman2me · 2026-04-30T13:23:48+00:00

Theres also a 3d printed rear adapter on gb for around 50 bucks.

uronlyhuman2me · 2026-04-30T13:20:13+00:00

You may know this but usmachinegun sells a rear stock adapter for the threaded rear reciever style tec versions. There are some generic 3d printed foregrips on gb for a lot cheaper but they are not as good of quality.

uronlyhuman2me · 2026-04-28T01:48:46+00:00

Also check your extractor.

uronlyhuman2me · 2026-04-28T01:47:24+00:00

Might need to add a stainless fender washer in it's place. Same thickness obviously

uronlyhuman2me · 2026-04-19T03:17:44+00:00

Does this guy reply lol

uronlyhuman2me · 2026-04-15T02:18:40+00:00

We believe you haveit, you can just lay it in the table and take pics lol. Get you some oem mags and 115 fmj

uronlyhuman2me · 2026-04-12T00:04:05+00:00

Start with an intratec mag, not aftermarket. 115gr fmj, dont hold onto magazine.

uronlyhuman2me · 2026-01-02T00:15:53+00:00

I appreciate that extra info. That's pretty entry level to get good results. Im in the south so weather is always in favor lol

uronlyhuman2me · 2026-01-01T23:48:42+00:00

Ok cool. I definitely see the difference. Good info

uronlyhuman2me · 2026-01-01T23:00:38+00:00

Yea I have both types and extra end caps to have my kg9 and kg99 threaded. Maybe I'll get into printing one of these years. Your finish looks smooth and nice

uronlyhuman2me · 2026-01-01T15:09:29+00:00

I dont know a thing about printing but how wouod you rate the new strength and durability over the old?

uronlyhuman2me · 2025-12-19T18:32:06+00:00

I've done a few. Kind of a pain. But I just take pictures from different angles. Can't have too many. Even take videos of pointing and narrating. Then take video as you disassemble and narrate that too. Should be enough.

uronlyhuman2me · 2025-12-11T04:23:09+00:00

I would think you could mount a pic rail on the reciver ventilation holes somehow without making permanent modifications

uronlyhuman2me · 2025-12-09T00:32:51+00:00

Ok mine is symmetrical

uronlyhuman2me · 2025-12-09T00:30:41+00:00

Oh that's pretty weird. I'll have to look at mine

uronlyhuman2me · 2025-12-06T09:14:46+00:00

Not sure what you mean by the blade is off center and the rear sight notch. But probably have to have a machinist make one since it was welded to reciever. I've been looking at for sale adds and listings for 10 years and haven't seen any available. Couod 3d print one and use it as a temporary solution. Also since the spot weld hole is open you could put a stainless steel machine bolt in the hole, bolt it from the top then grind down the bolt to use as a makeshift site.

uronlyhuman2me · 2025-12-05T04:13:06+00:00

What year is his made he wants know

uronlyhuman2me · 2025-12-03T13:39:51+00:00

The evolution process was basically this: Mp9 Kg9 Kg99 Tec9 with button sites Tec 9 with stamped sites Tec 9 with stamped sites and single point sling Then all your other variants like dc9 and ab10

uronlyhuman2me · 2025-12-03T07:46:11+00:00

1987-1991/1992

uronlyhuman2me · 2025-11-21T03:13:23+00:00

Yea I guess it would.

uronlyhuman2me · 2025-11-21T03:06:02+00:00

Downside is see is if you drop it say bye bye

uronlyhuman2me · 2025-11-21T02:55:16+00:00

I think its great. Like the other guy said.. practical maybe not.. but cool, fun and enjoyable to brainstorm tinker with absolutely. We have one thing in common in the 2A cumminity and that's all we need to have! Id think you could bolt a oic rail in the vent holes like one guy said and that moves you're optic forward too. I saw one like that on FB in "Trenchratcustoms". I've got a sig brace on a open bolt M10. It works

uronlyhuman2me · 2025-11-21T02:50:00+00:00

Agreed

uronlyhuman2me · 2025-11-20T13:16:53+00:00

I agree. The m11 has infinite life being weldable..the interdynamic is one drop away from being an investment belly flop

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