HK SP89 into SBR

DevinRPD · Jan 26, 2019

My father purchased an sp89 back before they were banned and has been keeping it in his safe pretty much since that time.

Since it would be grandfathered and is pre-ban, is there a chance the 29" OAL wouldn't apply to this if i decided to SBR it? thanks

ST19AG_WGreymon · Jan 26, 2019

It would not apply. Does he have a receipt or proof, just in case?

Caeb75 · Jan 26, 2019

It does apply. In submitting the form 1, you are manufacturing a new firearm and it is subject to the 29" rule in the eyes of MSP and ATF.

Combloc · Jan 26, 2019

Yep, 29" DOES apply.

DevinRPD · Jan 26, 2019

Caeb75 said:
It does apply. In submitting the form 1, you are manufacturing a new firearm and it is subject to the 29" rule in the eyes of MSP and ATF.

dam, shouldve done it before the 2013 ban then :mad54:

blksniper2000 · Jan 26, 2019

Original sp89's are kinda rare. I would prefer to buy a current clone and sbr or pistol brace that one instead.

Actually you could brace the sp89

ST19AG_WGreymon · Jan 26, 2019

I thought people were getting Form 1s approved for pre-Oct firearms with OAL less than 29"?

blksniper2000 · Jan 26, 2019

ST19AG_WGreymon said:
I thought people were getting Form 1s approved for pre-Oct firearms with OAL less than 29"?

For like a month after sb281 passed atf was approving forms but people kept questioning it and the msp made the atf stop.

Pinecone · Jan 27, 2019

Although, under MD Law an SBR is a PISTOL. And the copy cat law covers RIFLES.

So technically, the 29" limit does not apply to SBRs. But ATF will not approve it. And no one is willing to be the test case.

outrider58 · Jan 27, 2019

Caeb75 said:
It does apply. In submitting the form 1, you are manufacturing a new firearm and it is subject to the 29" rule in the eyes of MSP and ATF.

^^^This.

outrider58 · Jan 27, 2019

Pinecone said:
Although, under MD Law an SBR is a PISTOL. And the copy cat law covers RIFLES.

So technically, the 29" limit does not apply to SBRs. But ATF will not approve it. And no one is willing to be the test case.

I think it's because ATF considers SBRs to be rifles, there by falling under the copycat restrictions placed on rifles by Merryland.

That's my guess, anyway.

jollymon · Jan 27, 2019

As a SP 89 it's worth some coin , If were mine I would sell it or put back in the safe and leave it alone , Then buy one of the PTR pistols with a arm brace drive over to Va. and stock up on mags

DevinRPD · Jan 27, 2019

blksniper2000 said:
Original sp89's are kinda rare. I would prefer to buy a current clone and sbr or pistol brace that one instead.

Actually you could brace the sp89

yeah i hear you on that. im definitely not planning on permanently modifying it even if i could SBR it. ill probably brace it. but would be cool to be able to put the mp5k grip on it :envy:

oh well i suppose

Slim · Jan 31, 2019

Pinecone said:
So technically, the 29" limit does not apply to SBRs. But ATF will not approve it. And no one is willing to be the test case.

Wait, I didn't even realize there was a debate on that. I've been building everything to 29" and putting that on my Form 1s. But after making an SBR, one can (I thought, in the eyes of the ATF) temporarily change barrel length and OAL, but not in Maryland.

I was under the impression that even a temporarily-changed SBR had to be 29+" in MD. Is that not the case?

Hawkeye · Jan 31, 2019

Slim said:
I was under the impression that even a temporarily-changed SBR had to be 29+" in MD. Is that not the case?

It is the case, because MSP has decided that. Their interpretation of the law is questionable, but that's their ruling.

ken792 · Jan 31, 2019

DevinRPD said:
yeah i hear you on that. im definitely not planning on permanently modifying it even if i could SBR it. ill probably brace it. but would be cool to be able to put the mp5k grip on it oh well i suppose

AOW it to get the foregrip, then throw the brace on it.

You could also sell the SP89 out of state, buy an SP5K the next time imports come in, and pocket the difference. The SP89 still appeals to H&K collectors. They're functionally the same, but the SP5K will have the Navy ambi trigger group and the more modern F bolt group. The SP5K also already has the holes on the inside so you can drop in a paddle mag release.

Slim · Feb 1, 2019

Hawkeye said:
It is the case, because MSP has decided that. Their interpretation of the law is questionable, but that's their ruling.

Questionable indeed... :envy:

Not sure how I'll ever be able to do an MP5K clone SBR...

Probably another ginormous stock like my Glock SBR!

Slim · Feb 1, 2019

ken792 said:
AOW it to get the foregrip, then throw the brace on it.

Could you SBR it, use it with the foregrip and brace in MD, and then swap to a stock across the Potomac or Mason-Dixon?

Hawkeye · Feb 1, 2019

ken792 said:
AOW it to get the foregrip, then throw the brace on it.

Actually (and it's been a long time since I handled an MP5K so I don't remember) if the OAL is over 26", you can attach a brace without the AOW stamp. So a K plus the right brace you might be able to run a foregrip on it as long as it's over 26".

Slim · Feb 1, 2019

Hawkeye said:
Actually (and it's been a long time since I handled an MP5K so I don't remember) if the OAL is over 26", you can attach a brace without the AOW stamp. So a K plus the right brace you might be able to run a foregrip on it as long as it's over 26".

23.75" with the Choate folder and 3-lug/threaded barrel. Hypothetically at least.

But that does mean with an extra 2.25" of brace, you could get it into "Firearm" territory and add a VFG that way...

HK SP89 into SBR

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