Thread: Stirling Model P20 Bullpup conversion

This is my Stirling Model P20 conversion, using one of the many Steyr BB guns available on TradeMe. I paid $19 for this broken one, then gutted it using my Dremel knock-off.




It doesn't need too much modifying to make it fit.



This one uses the Stirling's slip on silencer and a bipod foregrip, which replace the fake ones from the BB gun.



A couple of hours work with the dremel for both halves of the clam-shell. If I do any more I will be much quicker now I've worked out where everything fits.





This is a piece of stainless steel from an ATM cash canister guide rail to keep the trigger linkages straight.



The trigger linkages are two welding rods attached from the BB trigger (a spring goes behind it) to the Stirling trigger.



It's not the most practical piece of kit but I reckon it looks a bit cooler than the original. I may possibly modify the BB mag so the Stirling one fits inside it but then I would have to register it as an E-cat weapon.



This measures 31 inches with the silencer, 30.5 inches without.


Steve

ATM cash cannister rail? As long as it isn't ANZ

Thats awesome, I've been reading about guys doing that overseas, and its on my rainy day project list
Keep the thread updated if you make some more changes

No linkage to the charging handle?

No, it was a quick and dirty build just to see how it would work. It still charges ok but would be easier with an extension. It may also require some steel around the ejector port - at present it's just ABS plastic but fortunately it is in an area where it's already nicely shaped. I'll see how it holds up after a few hundred rounds.

Back when I was wage-donkeying for Trustbank/Westpac they got rid of all the old aluminium locking cash canisters and replaced them with smaller plastic ones when we changed to plastic notes. I scored a bunch of them, knowing that a green bank would want to see them recycled into weapons.

That's cool as fuck, and I want one. Unfortunately it's already E-Cat, as the Steyr grip is considered free standing. Look closely at the GC A-Cat Steyrsm they have another piece in behind the handle.

Originally Posted by AzumitH

That's cool as fuck, and I want one. Unfortunately it's already E-Cat, as the Steyr grip is considered free standing. Look closely at the GC A-Cat Steyrsm they have another piece in behind the handle.

Debatable, I have had two different answers two this from two AOs in the last month.

thats awesome as

Originally Posted by AzumitH

That's cool as fuck, and I want one. Unfortunately it's already E-Cat, as the Steyr grip is considered free standing. Look closely at the GC A-Cat Steyrsm they have another piece in behind the handle.

not by the letter of the regulations

I'm hoping that it's not considered "free standing" - if it didn't have the front piece on the non-free-standing grip then it would be too flimsy. Maybe I will register it as E-cat anyway so I can add the BB mag into the design for a better overall look - more like a proper Steyr.

I do think it's important to challenge as many regs as possible, especially if they are being interpreted unfairly. As it is you've got to wonder how long before the media start their next anti-gun beat-up now that they appear to have won their crusade against legal highs. Maybe they will pick on home-brewers, home-mechanics or home builders next though.

I've been thinking of doing this with an FN SCAR or something. A P90 or FS2000 build would be A cat, as long as you kept it over 762mm

Originally Posted by Beavis

I've been thinking of doing this with an FN SCAR or something. A P90 or FS2000 build would be A cat, as long as you kept it over 762mm

The P90 is what I was going to base my build on. Unfortunately there seem to be no Airsoft versions in the country.
There is an off-the-shelf kit for the 10/22 from High Tower Armory, but its still a 10/22 inside

I agree with being prepared to fight the good fight and all that, but you better be really prepared.

Is designed to be gripped by the whole or most of the trigger hand of a person firing the firearm; and
Is (if any trigger guard is disregarded) structurally connected to the firearm at only one point; and
When deployed, protrudes from the firearm in a direction that is closer to being perpendicular to the barrel than to being parallel to it;

I recall an image being posted on this forum even which singled out the AUG as being considered to have a free standing grip. I think the general police opinion is that the bit in front of the grip is a trigger guard only and doesn't count as two points of contact. My mate dropped an SKK into a bullpup stock with a grip identical to the AUG, and he has been informed that it is an E-Cat configuration.

Obviously its another case of "depends who you ask", but I would not sit back and relax with something in an AUG stock that wasn't on E, unless it was bolt action

But I don't mean to shit in your cereal OP, I would love to do something similar with mine. What brand airsoft gun was it? Might keep an eye open.

The police seem to have it on for bullpup a full stop.

I can see why the AUG is debatable but I also have a 10/22 in a redjacket stock that is clearly attached at the back of the grip as well as having a clearly defined trigger guard. Had one AO tell me that because it's a bullpup it was E cat. It's not and even J Green agrees. Still waiting on his reply about the AUG

But I don't mean to shit in your cereal OP, I would love to do something similar with mine. What brand airsoft gun was it? Might keep an eye open.[/QUOTE]

TradeMe seller Waynelee has been selling this model and various others for over six months now. Here is one of his other listings on $1 reserve:

*FULL SIZE M8 STEYR ASSAULT RIFLE - REPLICA $1 RES | Trade Me

I got about half a dozen of them to play around with, including MP5s. I've also got a pile of various model .22 semi-autos for fiddling with too.