HFC M172 'Box Cannon' takedown/disassembly

CroppyBoy1798 · 04-07-2008, 23:50

Well, as these are guns are more readily availible in Ireland now, there may be a few owners wondering how the hell do they come apart, or if they come apart at all! I havent been able to find any guides on the net, just puzzled people wondering how exactly does the thing come apart!

Well, for those of you interested, below is a take down guide. Its the method I have used, which works. Be forewarned though, as you can see in the latter images, the trigger/hammer mechanism is held in place via tension, therefore:

A. Take this thing apart VERY carefully and with patience!
B. Do not do it outdoors, or somewhere that a flying spring is likely to get lost, as those spring can fly! And at times take a little arm with them!

Tools required:
A single, small flat head screwdriver.

Ok, so here we go.....

1. Remove the magazine

2. Remove the screw on the right hand side, for the fire selector.

3. Remove the fire selector switch.

4. With the hammer UNCOCKED and the safety set to SAFE, get a firm grip of the barrel and the handle.

Push the barrell and grip together, if you know what I mean, you want to slide the top slide rearward. It may be a little stiff, but will go. Be careful and gentle, dont hit it too hard or fast, just apply gently pressure.

5. By now you should feel the top slide moving back, bringing with it the trig/hammer mechanism.

6. At this stage I COCK the hammer and set the safety to FIRE. To go any further you will have to press in the 'firing pin', and keep it pressed in.

7. With the firing pin pressed in, continue sliding the top slide back, at the same time keeping the firing pin pressed in.

8. The trig mech. housing will now clear the body and all that is left to do is...

9. ...slide the top slide off the remainder of the way.

The trigger/hammer mechanism is attached to the top slide, but can be removed. its only held in place via an arm which grasps the fake firing pin.

The trigger/hammer mechanism removed, as stated already, be careful with this, its like Buckaroo, one wrong move and it could buck-buck-BUCKAROO! haha

She's currently all stripped down to under go 'aging', so I havent got a 'reassembly', I'll leave that to you to figure out. Basically just the steps above in reverse. Any problems, gimme a shout!

echo147 · 30-10-2008, 01:24

i just got done playing with this gun. and i followed ur directions to take it apart. by the way they are well written. but i can get the top reciever on to the botom one. i think the trigger is stopping it. how do i do it? lol

kevteljeur · 30-10-2008, 07:32

Excellent guide, CroppyBoy - you've given Vtec a run for his money!

Nodin · 30-10-2008, 10:10

Who has these over here, btw? The only one I've seen is a non-blow back version.

Spitfire666 · 25-11-2008, 11:55

pm'd

04-07-2008, 23:50	#1
CroppyBoy1798 Registered User Join Date: Sep 2005 Location: Carlow town Posts: 3,227 Adverts \| Friends	HFC M172 'Box Cannon' takedown/disassembly Well, as these are guns are more readily availible in Ireland now, there may be a few owners wondering how the hell do they come apart, or if they come apart at all! I havent been able to find any guides on the net, just puzzled people wondering how exactly does the thing come apart! Well, for those of you interested, below is a take down guide. Its the method I have used, which works. Be forewarned though, as you can see in the latter images, the trigger/hammer mechanism is held in place via tension, therefore: A. Take this thing apart VERY carefully and with patience! B. Do not do it outdoors, or somewhere that a flying spring is likely to get lost, as those spring can fly! And at times take a little arm with them! Tools required: A single, small flat head screwdriver. Ok, so here we go..... 1. Remove the magazine 2. Remove the screw on the right hand side, for the fire selector. 3. Remove the fire selector switch. 4. With the hammer UNCOCKED and the safety set to SAFE, get a firm grip of the barrel and the handle. Push the barrell and grip together, if you know what I mean, you want to slide the top slide rearward. It may be a little stiff, but will go. Be careful and gentle, dont hit it too hard or fast, just apply gently pressure. 5. By now you should feel the top slide moving back, bringing with it the trig/hammer mechanism. 6. At this stage I COCK the hammer and set the safety to FIRE. To go any further you will have to press in the 'firing pin', and keep it pressed in. 7. With the firing pin pressed in, continue sliding the top slide back, at the same time keeping the firing pin pressed in. 8. The trig mech. housing will now clear the body and all that is left to do is... 9. ...slide the top slide off the remainder of the way. The trigger/hammer mechanism is attached to the top slide, but can be removed. its only held in place via an arm which grasps the fake firing pin. The trigger/hammer mechanism removed, as stated already, be careful with this, its like Buckaroo, one wrong move and it could buck-buck-BUCKAROO! haha She's currently all stripped down to under go 'aging', so I havent got a 'reassembly', I'll leave that to you to figure out. Basically just the steps above in reverse. Any problems, gimme a shout! __________________ A good man will be a good man anywhere, no matter what his creed, conviction or station may be. 'Carlow in '98' William Farrell ->Check out my woodcraft Facebook page, become a fan!! Peter H Woodcraft Thanks!<-

30-10-2008, 07:32	#3
kevteljeur Registered User Join Date: Jan 2008 Location: Dublin Posts: 1,099 Adverts \| Friends	Excellent guide, CroppyBoy - you've given Vtec a run for his money! __________________ I make half the food I eat. I buy the other half from you. Starvation! Except, I also make houses. I sell the houses to me at more than it cost me to make them, and I borrow to make up the difference, from you. This pays for the other half of the food I need. In fact, if the value of the houses I sell to me is more than the food, then in fact it just makes my situation acutely worse, or if you decide to stop lending, or if I decide I can no longer afford my own houses. And I still need to get half of my food from you. .

25-11-2008, 11:55	#5
Spitfire666 Registered User Join Date: Dec 2005 Location: dublin/offaly Posts: 2,321 Adverts \| Friends	pm'd __________________ http://shoadowland.myminicity.com/

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30-10-2008, 01:24	#2
echo147 Registered User Join Date: Oct 2008 Posts: 1 Adverts \| Friends	i just got done playing with this gun. and i followed ur directions to take it apart. by the way they are well written. but i can get the top reciever on to the botom one. i think the trigger is stopping it. how do i do it? lol

30-10-2008, 10:10	#4
Nodin Registered User Join Date: Aug 2008 Posts: 4,649 Adverts \| Friends	Who has these over here, btw? The only one I've seen is a non-blow back version.