Canadian Airgun Forum

Mounting a Detachable Stock to a Match Pistol
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Author:  Allheart [ Mon Oct 13, 2014 9:56 pm ]
Post subject:  Mounting a Detachable Stock to a Match Pistol

Hi, Im looking at way in which i could possible mount a detachable wire stock to the stock grip. Ideally i would like to mount it above the grip but this might not be possible unless i went with a completely custom grip, which maybe best given the grip angle on match pistols.

At first i figured I could just thread the end of the wire stock, drill a hole at the bottom of the grip and insert a threaded metal insert like the one here:

the problem with this is i feel that the insert could loosen up under the twisting presure exserted when screwing on the stock, as i would like the stock to fight tightly. it would be very easy for the stock to get miss aligned. Maybe a drop in fitting would be better? if anyone has done something like this please chim in :)

I have a gmac stock on my 1377 and i was think of building a mount around that kinda of concept.

I've attached 2 images to show my thought process (i know they aren't steyr lp50 but the grip is very similar).

Steyr LP50 fitting 1.png
Steyr LP50 fitting 1.png [ 167.26 KiB | Viewed 733 times ]

Fitting1 uses involves a thin metal pipe (or dropin insert) with female threads is inserted into the bottom of the grip and mounted with liquid nails. Then the stock is threaded. after measure for the stock and metal road are taped and a small screw can be used to hold the stock in place with out moving. a bolt can also be place on the far end.

Steyr LP50 fitting 2.png
Steyr LP50 fitting 2.png [ 166.48 KiB | Viewed 733 times ]

I was also thinking that the metal pipe was a bit unnecessary. I could simply drill a hole in the bottom of the grip for the stock to slide into. tap the stock and drill an intersecting hole to insert a screw to lock the stock in place. probably but a plastic washer in to protect the grip. i could also insert drop in micro insert but i dont think this is necessary

Thanks in advance guys, and sorry about the bad descriptions, never really done this kind of thing before

Author:  GerardSamija [ Tue Oct 14, 2014 2:29 am ]
Post subject:  Re: Mounting a Detachable Stock to a Match Pistol

Firstly, I'd suggest that if you actually have a match pistol, it seems a bit strange to contemplate turning it into a wire stocked carbine. A match pistol does one thing very well. Everything about it is designed for 10 metre target shooting with one hand. Any customization ought to be in the realm of making the grip fit you properly so that the sights line up automatically with the target and your grip is secure over the duration of a match.

That said, I suppose you could do something like what I did with my Brocock Atomic pistol to add a wire stock. I tried to like it as a pistol but the stock grip was just awful for one-handed shooting, and I'm not a two-handed shooter. I have my Pardini K12 for matches and training, so the Atomic is more of a plinker. And as a carbine, either with a wire stock or with the Boyd's Blaster stock I fitted to it, it's a lot more fun to shoot than as a pistol. So it's been through a few iterations, and lately I've settled on the lightest version with a 3/8" aluminum wire stock.

The key to mounting the plain aluminum rod is a tube of steel which is almost a snug fit. I found a length of lamp rod and reamed it out until the aluminum rod could slide in with just a bit of wiggling. Then I found the location on the left side of the grip would would provide a good secure anchor point as well as placing the wire stock to the left of the scope, so as to place my cheekbone in the right relation to the scope eyepiece. Then I selected a small scrap of steel plate, 1/8" x 3/4" x 2", and brazed it to the tube at a right angle. I then drilled and countersunk two holes in the plate at strategic locations in the grip side. After drilling for screws into the grip through these holes I traced the outline of the steel plate then removed it, then carved out the wood until the steel could recess adequately into the grip. I then mixed some epoxy and set the steel into place and drove the screws in tightly.

It's not a pretty solution, but this isn't a pretty gun, it's a fun plinker. It's very light at about 3 pounds 12 ounces and shoots with admirable accuracy for only a 7.5" barrel. Of course for your particular pistol the dimensions and angles will be different, as well as your preferences for stock location, but the idea is simple enough. Oh, and to prevent rotation I just drilled a small hole through the front end of the steel tube and drove a finishing nail through that into the grip, then sawed and filed a matched groove into the front of the wire stock rod. The slot tapers in a V shape, such that it's a loose wiggle fit when it's beginning to nest, then snugs up to very secure when pressed home. Groove is about 3/16" deep. Takes a couple of seconds to mount or dismount the wire stock. Such a mount could stay in place on a match pistol grip at all times if you liked, so long as you embedded it sufficiently that the grip still fit into 'the box' with the 50mm depth meeting ISSF regulations, as found at all official matches. You could even do away with the plate, drilling and mounting a tube from the back of the grip then fixing it in place with a nail/pin which could double as a locking device for the tube into the grip (I'd recommend some epoxy around the tube as well) and a locator for the end of the stock rod.

wire_stock_mount (1).jpg
wire_stock_mount (1).jpg [ 71.73 KiB | Viewed 704 times ]

wire_stock_mount (2).jpg
wire_stock_mount (2).jpg [ 94.09 KiB | Viewed 704 times ]

Author:  EverHopeful [ Wed Oct 15, 2014 6:08 pm ]
Post subject:  Re: Mounting a Detachable Stock to a Match Pistol

Got to be worth making a fully custom grip/stock rather than risk messing up the factory grips which must run 200 to 300 bucks? It does seem a bit of an odd thing to do with such an expensive pistol - I can't decide if I'm appalled or impressed. To each their own!

I'd love to see what Joe Hickey could come up with to dress an LP50 in. Given a $2500 gun you could go wild and get the nicest piece of triple A fancy walnut you could lay your hands on and let Joe work his magic. That would be quite something :shock:

Author:  Allheart [ Fri Oct 17, 2014 9:49 pm ]
Post subject:  Re: Mounting a Detachable Stock to a Match Pistol

Thanks for the input guys, I think I might start looking around for a machinist. What I'm really trying to achieve here is the ultimate close range pistol/carbine. I do most of my shooting from the living room, were I have a large target box set up at ~10m for paper targets and spinner (planning on building a mini duelling tree as well). I also have a smaller box set up in the back yard at about ~20m (I shoot from inside to minimize wind). Based on my research, both these targets seem to be within range of the lp50. Not sure if this is exaggerated but apparently users are getting ~1" groupings at 50 yards from a bench. I dont have much pistol shooting experience, but I used to have a blast with a small duelling tree and acouple of 22s when i was a kid. I see it as something i could get into. I have a trig rmr from my army days that i could use for indoor pistol range, and im thinking of getting a leupold rimfire vx-1 2-7x28 and setting the parallax to ~15m. With the scope and the stock mounted, im thinking this could be a wicked little shooter for 20m paper punching and shooting matchheads at closer range.

With scope 240g, stock probably 400g, and pistol 1000g this would be a ridiculously light weight setup capable of super accurate semi automatic fire!! Abit over the top, yes but hey, i can always take the stock off and i doubt it will add more than 30g to the setup. And if done properly probably wont look to bad either.

In all honesty i dont expect the accuracy to be any better than my old 1377 (pimped to the max, gmac, mac1,mellonair, all the goodies, 18" LW barrel, this thing was putting 10 shots on a dime at 20m) but the ability to shoot fast semi auto as a pistol, then toss on a stock and scope for longer ranges, not to mention the butter smooth trigger just makes me frisky!! :rolleyes:

Author:  flyr [ Fri Oct 17, 2014 10:42 pm ]
Post subject:  Re: Mounting a Detachable Stock to a Match Pistol

Don't know if you can go under the grips or not with your pistol,but I put a rough one together for my P1 using aluminum sheet and an adjustable stock for a Glock pistol.
It works well and is quite handy.

Author:  Plinkercases [ Fri Oct 17, 2014 10:49 pm ]
Post subject:  Re: Mounting a Detachable Stock to a Match Pistol

Flyer that is slick. Well done for a rough one.

Author:  flyr [ Fri Oct 17, 2014 10:54 pm ]
Post subject:  Re: Mounting a Detachable Stock to a Match Pistol

Thanks Plinker!
The plastic stock came from China (DHgate) and was around $20 with free shipping :D
I added the wood cheekpiece.
Surprisingly sturdy as well.

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