Ice Breaker (Co2 bufferstock breacher remix)

Ice Breaker - Co2 Breacher

Works alright, the rear is tight fitting bit should work. I specify in the instructions i used a gen 2 spexbz. I would recommend using a narfbz, or a  spexbz 3.0 or newer, due to both sides are threaded on, and will not blow out from constantly racking the blaster (don't ask me how i know).

04/05/26. Uploaded Build Guide.

04/10/26. Uploaded revised Rear Inlet Aligner for spexbz 3.0 and newer, or a narfbz.

I wanted to leave the front end (shell side) with minimal to 0 changes due to not wanting to fk with mechanisms etc, all changes are towards the rear of the blaster, so should be able to use whatever front ends and pic rails you want.
If you have short arms this can be unwieldy, adds a little bit of length to the rear, but still easy for me.
You will have to drill small divots into your spexbz due to not wanting to use epoxy, so keep that in mind please. It wont destroy the functionality but if you're an idiot and drill all the way through then that's on you.

Yes it does stick out the back of butt pad, its so you can access the end cap if your using 12g cartridges, or 33g cartridges. This part can get very cold, especially if you are using 33g cartridges since they are exposed out the back. Please use your brain and wear something that can mitigate it. My thinking was if my arm is warm i can help mitigate sag and maybe get an extra shot before it does sag. If you do not know what this is do research on Co2 before attempting this build.

Used this grip since it had more space at the back to hide stuff, and extra support i guess?

If people are actually keen on building this then i can post more info on build process and some terrible design choices i went with :)

Used metric kit so not sure how much of the freedom Breacher kits can be used.

Here's a list of crap u will need to build it:

• 1x Metric Breacher hardware kit

• 1x WRAITH X HPA & CO2 Stock (AEG VERSION)

• 1x Spexbz 3.0 and newer or Narfbz (After about 250 shots the gen 2 spexbz blew out, please use a gen 3 or newer or narfbz since both sides are threaded.)

• 1x MJVO-3 valve

• Minimum x1 Legris 3601 06 10 Male Connector Tube x Bspp 6mm 1/8" (2 if u are wealthy or stick to 1 and then use a 6mm brass 1/8" bspp connector for the rear of the spexbz like ive been running)

• 1x Legris 3199 06 10 Male Elbow Connector Tube x Bspp 6mm 1/8" (Must use these for the compact elbows, lots of hpa build use this so buy a few for the future)

• 1x m3 - 4mm od, 3-4mm Length Brass heat insert

• 1x m3 shsc, 10-12mm length

• 3x m3 shsc 65mm length

• 1x 25mm od -19mm id - cs 3mm oring

• 3x m4 grub screw, 10mm length and under

• 1x size 14 rubber band

• 4x m3 scrub screws, 10-8mm length (holds the spexbz so id go with, i can just fit the 10mm while being flush)

• ~340-320mm of 6mm od - 4mm id airline

• 3.2mm drill bit (maybe can get away with 3mm?)

• Liquid thread sealant (Permatex high temp sealant or loctite 567 - stop using tape you're better than that) or just use thread tape

I think this is the list but i clearly did a good job with documentation, may add to it if i remember what else i used.

I would highly recommend getting a set of minimum 150mm woodworking quick clamps.

Some of the end extensions are tight af, may need to bore some holes with 3mm drill so they are easier to put on (this info is here so i remember to add it to the instructions).

Now some boring estimates on shots, did some rough napkin math and fact checked by Mr ChatGeaPeaTea, so use this as an estimate to see what psi your reg is outputting. Please take it with a grain of salt since every setup is different, and many factors play into this.

Calculated with 350mm tube from mjvo3 valve to the spexbz, purely on volume:

Now with estimated sag, estimated on ambient temp at 20°c:

After running it at an indoor event i was getting around 35 shots on near max pressure with a 33g canister, so I'd say the rough calculations are pretty close.

Rapid firing is x amount of shots within 5 ish seconds. To help the regulator recover from sag, you let it rest for a few seconds between bursts (maybe load some shells or something). The power dramatically does get reduced, even with my test day in 31°c ish weather i was getting an extra shot off before it sags. But if you do your research you would know the limitations of Co2.

As always thanks to creators of both the Breacher and the grip, if i had to design from scratch id be throwing darts by hand.


no need to tell me I'm shit at cad, go make a better one.
Cheers