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Posted: 2/23/2007 6:44:32 AM EST
What has to be done to a ambi trigger group for it to work on a MP5 RR? I know it has to be a clipped and pinned housing but is that it? Thanks jm
Link Posted: 2/23/2007 8:11:56 AM EST
Not sure I understand.....

as 'most' registered receiver MP5s use 2-push-pin ie, swing-down lowers.

Link Posted: 2/23/2007 11:35:07 AM EST
I must have it wrong then. I thought that there was some rr MP5's without the hole drilled completly through. My question was do you still have to modify the trigger pack?


Originally Posted By osprey21:
Not sure I understand.....

as 'most' registered receiver MP5s use 2-push-pin ie, swing-down lowers.

Link Posted: 2/23/2007 2:05:47 PM EST
Most RR's use push-pin lowers. Some don't. You can read more about that HERE
Link Posted: 2/23/2007 6:14:00 PM EST
Read on HKpro to figure the diff.
RR will have push-pins
Sounds like someone has a "registered sear"
Thus you need to C&P the pack and modify the front metal of the pack to sit on the 'shelf'

Atleast that's the way I understand it. Very well could be wrong.
Link Posted: 2/24/2007 2:54:53 AM EST
Maybe he's talking about one like this: www.ar15.com/forums/topic.html?b=7&f=118&t=418708
Link Posted: 2/24/2007 3:00:21 AM EST
That's kinda what I was thinking.
Link Posted: 2/24/2007 3:43:29 AM EST
Nail on the head


Originally Posted By drfcolt:
Maybe he's talking about one like this: www.ar15.com/forums/topic.html?b=7&f=118&t=418708
Link Posted: 2/26/2007 12:15:36 PM EST

Originally Posted By osprey21:
Not sure I understand.....

as 'most' registered receiver MP5s use 2-push-pin ie, swing-down lowers.



You've got it totally backwards; most RR MP5s are clip on lowers and swing-down lowers are the rare ones.
Link Posted: 2/26/2007 12:17:41 PM EST
A clip on lower RR can have the packed modified to an extent to take other trigger groups configurations.
Link Posted: 2/27/2007 12:34:49 PM EST
[Last Edit: 2/27/2007 12:43:50 PM EST by Homeinvader]

Originally Posted By Hail Mary:

You've got it totally backwards; most RR MP5s are clip on lowers and swing-down lowers are the rare ones.


Absolutely correct. There are MANY more clip-on RRs than push-pins, that's why Push-Pin RRs will fetch 3-4 thousand dollars more than Clip-On's.

Back in the days when individuals could Form 1 a machine gun, very few C2s were converting HK receivers by drilling the push-pin hole, eventhough it was far easier to do, because there was almost no source for factory MG lowers. C2s usually had to extensively modify the semi-auto trigger pack with a home-made sear in order to make it all work, then registering the whole gun, hence creating a Clip-On RR conversion.

Only when a C2 or individual could get their hands on a factory MG lower would they convert the semi receiver by drilling and this is why there are so few of them around.
Link Posted: 2/27/2007 5:51:15 PM EST
Its my understanding that RR mp5s are bacialy non -existant, and most were done by flemming and had the sear pack modified?
Link Posted: 2/27/2007 6:20:47 PM EST
Fleming did a lot of RR's but not by any means all of them. The Push-Pin RRs had no other modifications, just the hole drilled, so they can use a factory MG lower. They are identical to factory MP5s, that's whay they are so valuable.
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