.22 conversion unit copy

skid · 06-08-2009, 10:03 PM

Hello,

I have just aquired a conversion unit. It is marked -HEP NYC by the rear sight. The breech block, sight block & toggles are all marked 63. It is a copy of an ERMA unit. It has a 7.25 " barrel which is marked 22lr & HEP NYC. The magazine has HEP cast into the aluminum base scallops & is different from the ERMA magazine in that the body of the magazine has grooves impressed into it where the follower pin travels & on the opposite side as well. The barrel threads are 3/8-24 sae. The machine work is very good, very professional. Have any of you knowledgable people ever heard of this type conversion or manufacturer?. I would really like to know what I have here.

John Sabato · 06-09-2009, 01:43 PM

The HEP NYC must be importer marks.

I know I am not the only person who would like to see good clear focus photos clsoeup of your conversion unit...

skid · 06-12-2009, 12:21 AM

John,

I would be happy to put up some pictures when I get the opportunity. Things have been a bit hectic for me lately. I see you've been looking for blueprints for conversion units. I just finished making a replacement barrel for my conversion unit. When I bought the unit via gun broker the guy failed to mention the barrel had been severely cross threaded & that someone had done a modification that left the chamber unsupported @ the extractor cut. This caused the cartridge case to burst when firing & popping out the extractor. I made the replacement barrel from an old 10/22 barrel & it seems to work nicely. If you would like, I could probably draw up a print of the barrel I made.

Regards,

Mark

John Sabato · 06-12-2009, 08:47 AM

A print of the barrel or ANY parts of the .22 conversion unit would be great. What cad software did you use? I have AutoCAD.

06-08-2009, 10:03 PM	#1
skid User Join Date: Sep 2005 Posts: 5 Thanks: 0 Thanked 0 Times in 0 Posts	.22 conversion unit copy Hello, I have just aquired a conversion unit. It is marked -HEP NYC by the rear sight. The breech block, sight block & toggles are all marked 63. It is a copy of an ERMA unit. It has a 7.25 " barrel which is marked 22lr & HEP NYC. The magazine has HEP cast into the aluminum base scallops & is different from the ERMA magazine in that the body of the magazine has grooves impressed into it where the follower pin travels & on the opposite side as well. The barrel threads are 3/8-24 sae. The machine work is very good, very professional. Have any of you knowledgable people ever heard of this type conversion or manufacturer?. I would really like to know what I have here.

06-09-2009, 01:43 PM	#2
John Sabato Lifer Lifetime Forum Patron Join Date: Jun 2002 Location: The Capital of the Free World Posts: 10,150 Thanks: 3,003 Thanked 2,304 Times in 1,096 Posts	The HEP NYC must be importer marks. I know I am not the only person who would like to see good clear focus photos clsoeup of your conversion unit... __________________ regards, -John S "...We hold these truths to be self-evident that ALL men are created EQUAL *and are endowed by their Creator* with certain UNALIENABLE* rights, and among these are life, LIBERTY, and the pursuit of happiness..."*

06-12-2009, 08:47 AM	#4
John Sabato Lifer Lifetime Forum Patron Join Date: Jun 2002 Location: The Capital of the Free World Posts: 10,150 Thanks: 3,003 Thanked 2,304 Times in 1,096 Posts	A print of the barrel or ANY parts of the .22 conversion unit would be great. What cad software did you use? I have AutoCAD. __________________ regards, -John S "...We hold these truths to be self-evident that ALL men are created EQUAL *and are endowed by their Creator* with certain UNALIENABLE* rights, and among these are life, LIBERTY, and the pursuit of happiness..."*

06-12-2009, 12:21 AM	#3
skid User Join Date: Sep 2005 Posts: 5 Thanks: 0 Thanked 0 Times in 0 Posts	John, I would be happy to put up some pictures when I get the opportunity. Things have been a bit hectic for me lately. I see you've been looking for blueprints for conversion units. I just finished making a replacement barrel for my conversion unit. When I bought the unit via gun broker the guy failed to mention the barrel had been severely cross threaded & that someone had done a modification that left the chamber unsupported @ the extractor cut. This caused the cartridge case to burst when firing & popping out the extractor. I made the replacement barrel from an old 10/22 barrel & it seems to work nicely. If you would like, I could probably draw up a print of the barrel I made. Regards, Mark