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View Full Version : New MR2 Bolt


ForrestSpyder
04-03-2007, 10:35 AM
I am looking for an improved bolt for my new MR2. The ACS just inst working for me. Any recommendations. If you could provide links to where I can buy them that would also be great.

Thanks.

Critical
04-03-2007, 10:51 AM
MR2 bolt, with o-rings, don't bother with the "low blow" bolt, just get the delrin.
http://www.alamocitypb.com/MANUFACTPAGES/kingman.html

Firekillernmp
04-03-2007, 11:11 AM
why not bother with the "low blow" bolt are they the same but one is less???

Critical
04-03-2007, 11:15 AM
Well, I don't have either one, but from the posts that I have seen here, it seems like the low blow puts some odd spin on the ball, (yes, I know that's what it's supposed to do) but that it can be a bit unpredictable.

Firekillernmp
04-03-2007, 11:21 AM
yea i just saw it on another thread and they said it hogs air too

ForrestSpyder
04-03-2007, 12:28 PM
Thanks alot. I was having some problem with popcorning and ball chopping, so I hope this helps.

QuiGonKen
04-03-2007, 07:11 PM
i just got my bolt in the mail...and i forgot to add how many orings to put so it has none...lol

does this mean its gonna be just like the stock bolt?

or is at least a step up?

Firekillernmp
04-03-2007, 07:38 PM
should i go with the two o-ring bolt or the three???

pbgrandpa
04-03-2007, 07:47 PM
should i go with the two o-ring bolt or the three???Go with the 2-o-ring bolt. The 3 will eat the dentent. Take it from one who knows.

ForrestSpyder
04-03-2007, 07:50 PM
I'm going to go with the 2 O-ring bolt.

Firekillernmp
04-03-2007, 08:00 PM
yea the two for me too sounds good thanks

QuiGonKen
04-03-2007, 08:11 PM
um.....how bout mine? anyone? someone? pls?

pbgrandpa
04-03-2007, 08:17 PM
i just got my bolt in the mail...and i forgot to add how many orings to put so it has none...lol

does this mean its gonna be just like the stock bolt?

or is at least a step up?I'd say pretty much a stock bolt w/no ACS. If you haven't used it see if they will take it back and get the 2 o-ring one.

QuiGonKen
04-03-2007, 08:47 PM
:D thank you

Firekillernmp
04-03-2007, 09:29 PM
i just got my bolt in the mail...and i forgot to add how many orings to put so it has none...lol

does this mean its gonna be just like the stock bolt?

or is at least a step up?

i am not sure i am new but i think it will act just like the stock bolt..i think the o-rings helps stop the blow back that makes the paintballs chop but like i said i am new so i may be wrong....
sorry i see you had the reply you needed...lol

QuiGonKen
04-03-2007, 09:42 PM
LOL its all good
thanks!!!! everyone!!!!

i guess ill keep it, but should i be oiling it? or no?

Firekillernmp
04-03-2007, 10:03 PM
yea i think i saw that on another thread that its good to put 3or4 drops on it ... but like i said i am new dont do anything i say till it gets confirmed by a pro...lol just trying to help!!

darth massacre
04-04-2007, 12:31 AM
Quite a lot of guys here have the ACP 2 O-ring MR2 bolt. Works as advertised for me. I think its worth every penny. Haven't heard many bad things about it too except the 3 O-ring version tears apart the detents.

Critical
04-04-2007, 04:50 AM
yea i think i saw that on another thread that its good to put 3or4 drops on it ... but like i said i am new dont do anything i say till it gets confirmed by a pro...lol just trying to help!!

With the delrin no o-ring bolts, you don't need to lube/oil anything on it. With the o-ring delrin bolts, use either Dow 55 or Dow 33 lubricant, depending on what the manufacturer of the bolt recommends. Do not oil it! Oil can cause the delrin to swell and not fit in your marker anymore.

Glasher
04-04-2007, 07:14 AM
With the delrin no o-ring bolts, you don't need to lube/oil anything on it. With the o-ring delrin bolts, use either Dow 55 or Dow 33 lubricant, depending on what the manufacturer of the bolt recommends. Do not oil it! Oil can cause the delrin to swell and not fit in your marker anymore.

ACP bolt are made with a none swelling derlin :/

civickiller302
04-04-2007, 08:59 AM
....so...does the ACP bolt help with anything other than ACS problems??

ForrestSpyder
04-05-2007, 09:37 AM
Does anyone else find it ironic that the anti-chop system causes chops?

ksee777
04-05-2007, 11:00 AM
ACS worked for me... it was just annoying to recock the gun all the time.
There was a guy who milled the ACS bolt to accept o-rings. This helped the popcorn effect and it still retained the ACS if the hopper couldn't keep up.

Hob Hayward
04-05-2007, 12:18 PM
A guy on these forums milled his ACS for o-rings, it actually made the problem much worse because the o-rings caused too much drag, and the bolt would partially activate itself on every shot. That led to major choppage.

The Booth Man
04-05-2007, 01:31 PM
A guy on these forums milled his ACS for o-rings, it actually made the problem much worse because the o-rings caused too much drag, and the bolt would partially activate itself on every shot. That led to major choppage.


It definately can lead to choppage if there is too much drag, but if you mill the groove deep enough you can lighten the drag and keep a decent seal in the chamber.

However, I found that even with o-rings you can still experience lots of blowby.

I experimented with different pressures and found that once I dropped to around 600 psi, most of the blowby dissapeared.