I'm gonna use this 2" OD spud gun for my top-tube grenade launcher on my AR-15 .177bb gun as proof of conceptI guess I might grid off lots of plastic of the top of the rifle then mail order some 3D printed holder interface rings with sights or scope holder.https://www.amazon.com/Quarter-Mile-Cannons-City-Slicker/dp/B07582G447.Thots?
>>65272607this project.BTW, fags were saying using higher-V 40mm would result in excessive recoil, even with longer tube.But another feature his top mount could have is the whole tube recoils through the rings, as long as their is a provision to ensure the tube recoils over the shoulder of the operator, even just a little rod between rifle's butt and bottom of tube should work.
shid go for it idk
>>65272607go for it, but know that "legally", the ATF will probably consider it a DD, so you'd need to form 1 it if you want to be clear of any issues.
>>65272634interesting, thxI thought I'd be 110% in the clear because both are fully legal non-issue even in CA.so putting them together changes all that?
>>65272634any CA laws I should know about, since like silencers etc are illegal in CA?
Use quick release air fittings much faster and more reliable than hair spray gunsCarb cleaner or ether might have less residue but requires a tricky small amount to combust well.
>>65273704Will need a ball valve with male to male fittings just peice it together at the hardware store.https://www.harborfreight.com/14-in-female-steel-industrial-coupler-63547.html
>>65272860They've historically considered spud guns an exception to the rule, but they might get you on "intention to use it as a weapon", it just makes it more likely that the ATF will give you shit over it. If you read the DD definition they give https://www.atf.gov/media/24191/download>Destructive device.--The term “destructive device” means * * * (2) any type of weapon by whatever name known which will, or which may be readily converted to, expel a projectile by the action of an explosive or other propellant, the barrel or barrels of which have a bore of more than one-half inch in diameter, except a shotgun or shotgun shell which the Secretary or his delegate finds is generally recognized as particularly suitable for sporting purposes; . . .”>Section 5845(f)(3) excludes from the term “destructive device” any device which is neither designed or redesigned for use as a weapon and any device, although originally designed for use as a weapon, which is redesigned for use as a signaling, pyrotechnic, line throwing, safety, or similar device.You put it on a bb gun and they might potentially give you shit for it because of>redesigned for use as a weaponWould I consider it a DD? No, but you and I both know how the ATF can be.
>>65272860BTW this doubly applies to you damaging property or hitting someone with it for the same reason, intent or not the ATF will try to nail you for it.>>65272862IDK CA specific, I'd google it just in case given>CABTW I'm not telling you whether or not you should do it, I'm just informing you of the potential issues. What you decide to do is none of my business.
>>65272607Are you going to use the 40x51 high velocity grenade?
>>65274359everything is on the table, including diff weights of tube.For example, if 40xfifty-THREE, even with slower burn charge, is just too hot for normal standing shots, it might be OK if the tube is allowed to recoil, or with maybe other mods/additions might work as recoilless (like with a baggie of 1/2 pint of water as tamping, or some insert you screw into the rear of tube then fill with water).Or it might work when the tube is used as Mortar with its ass on solid ground, either with or without the rifle, but hopefully the GPS cell phone maps based targeting computer.I'd like to go with just one size of ammo, but the charge could be dialed down to a couple levels by spiking a couple recessed "buttons" which would release a liquid that would disable some of the charge.https://en.wikipedia.org/wiki/List_of_40_mm_grenades
>>65274071thx, I'd keep it all on the downlow, along with some documentation, including this thread :), that is construction is purely "mock up", of which the only object is to double check the ergometrics of launching a simulated 40mm-ish object from a top mounted tube with a simulated more or less Ar-15ish pistol grip rifle with one straight top line from tip of barrel to top of butt, and to check ergos of tallish sights atop the tube's mounting rings. Maybe check ergos of optic mounted ontop rear ring. But first I'll probably do a fully non-functional mockup using an even cheaper toy AR-15, just to be able to butcher plastic closer to WTF I envision making.Maybe also 1" plywood mockup of AR-15/10 and other rifles.
>>65274090Yeah, CA law says any "grenade launcher" on a semi-auto detachable mag centerfire rifle (or SKS) is an ASALT WEPPAN. Basically CA defines any sort of grenade launcher as banned.
>>65274671Half a pound projectile subsonic is quite something. For reference energa 750g * 75m/s probably is only possible backed by trees or the ground, and m31 700g*50m/s being barely handled by meat and bones.x53 grenades is said to be 255g * 230m/s, give or take 1/3 or the energa in weight, and 3 times the energa velocity. Weight added tube weight and hopefully the highlow charge system the launch would be a lot more tolerable, maybe a ball joint on alice backpack tubing to ease it. I think it is doable but i don't think it will be a good fit for basic rifle squad, long range heavy weapon more suitable for weapons squad in a platoon.
>>65272616You're retarded but I wish you luck.
>>65272860>>65274071I think it's a gray area and depending on how you employ it they may not look the other way.If you are loading potatoes, pop cans or tennis balls in a spud gun, fine.You start filling tennis balls with napalm, loading D cell batteries in styrofoam sabots or attaching percussion cap nose fuses to cans full of sensitized Tannerite they are going to rape you.Especially if you have it mounted to a functioning firearm.
>>65274671>the charge could be dialed down to a couple levels by spiking a couple recessed "buttons" which would release a liquid that would disable some of the charge.Way too complicated. Just use seperate projectile and charges.
