shibiwan

Much butthurtery these days.

SOT-2 tax stamp for the PDW since it's an NFA item since it falls under the short barrel rifle (SBR) category. Gotta fill in the ATF form 4, pay $200 and wait for a bazillion years (6 months?) to even get the stamp that allows you to buy an SBR. Dang... robo beat me to it!

I like the look of the PDW but it does require an SBR stamp... *sigh*

Nice!

Been wanting one myself....just for the sh*ts and giggles. Light, and because of the limited number of these around, ammo is easy to find. Probably would make a nice PDW for "her".

HK in action! You seen his video?

YEP! Here's more tips. When wet tumbling in a vibratory tumbler, don't overload the media with too much water. About 6-8 oz is enough. If there's too much water, you lose the vibratory effect. Keep the media clean. There's not much water in there, and you can't run a flow-thru setup due to the size of the media so it gets contaminated relatively quickly. Good thing is that the media stays clean enough for about 2-3 hours of tumbling. The secret sauce: Water + 1/2 tsp laundry detergent (because it's low foaming) + 1/2 tsp of lemmi shine. Don't tumble for too long. See #2. 1-2 hours should do it. Don't be lazy and leave the brass sitting in the wet media for more than a few hours if you're not tumbling. This causes the brass to tarnish. Rinse and dry off the cartridges by putting them on rags/paper towels immediately and rolling them around. I think oven drying may be may be a bad idea since it will likely accelerate the water tarnishing the cases.

Update 3 Re-ran the "dirty" batch that ran overnight. The media was extremely dirty and residue was everywhere. 30 minutes of tumbling fixed everything. The "magic" sauce is definitely the Lemmi Shine (original). Here's some 308 cases that went through the tumble.

Got more cheapie bits for the 300BLK build in the mail.

<lmao> <laughs>

Update 2 Left the tumbler running all night. Results were bleh....the liquid got dirty with all that scrubbing so rounds weren't shiny and sparkly. So there's apparently a point where you can overdo it (should've known this...been there with ceramic media). I'll have to clean the media and redo it. This time I'm gonna use Lemmi Shine and see what happens.

Honestly, the bitch is a shoo-in.

Got my cheap-ass-spec 10" free float quad rail ($37) for the 300 BLK. Quite happy with the quality.

Parts for the new 300BLK upper.

Wait... what's the guy running for in 2016?

What is the shoulder thing that goes up? ALIENS! That show should have been put down years ago. It's ruined the youth in this country for several years by imparting unrealistic dreams/goals for the majority. Enough already!

She has safety airbags. BTW, mountains are for bikes!

DAMMIT TOM.....IT WAS COLD OUT THERE IN THE GARAGE! :stfu2:

Sounds like some limey bast**d.

Well, the Nikon ballistics calculator app works well on Android phone. Only regret is paying $5 for it. LOL Didn't need it after going with an FFP Mil-Mil scope. :D

Update as promised. Left the stuff sitting all day so a lot of what was in the tumbler got corroded and discolored (dark brown) but the smooth finish is still there. Fired up the tumbler again to re-tumble it. Lets see how it does. I got 10 lbs of media and I think I can tumble quite a bit more than what I have in there. I'll probably get another 10 lbs later (bought the stuff off Ebay). I'm gonna try tumbling aluminum parts in there too... I currently tumble those in ceramic media Industrial Tumbler trick: Tilt the tumbler over 15-30 degrees. This causes any media to go lopsided in the tumbler. This forces a speed differential as the media and parts go around, making it more effective since it forces the media to mix and flow around the cartridges. Here you see my old Midway tumbler with a large cap bowl (from a Thumler that died) being propped up by an aluminum block for the tilt). The Hornady catalog is there just to keep things quiet. Here's the video. Notice how it speeds up on the right and slows down at the bottom left

How about a railed gas block like this? If you're using the lo-pro DPMS receiver, any AR15-spec railed gas block should work. Sounds like your barrel has a 0.75" gas block journal. I have this on the beater: Or you something like this: Strongly recommend the steel or stainless steel setscrew styles, avoid the clamped on ones.

You've already got it figured out there. :D (p.s. when I was in the military, we simply scrubbed it back/forth just so that we could pass the inspection... who cares, since it wasn't ours. <lmao> )

Hmm... I'm wondering if you could apply it on a dry coat of cerakote THEN cure the cerakote. The activator is solvent based and turns the print sheet into "almost paint" which will bond to the uncured cerakote and become part of the cerakote before it's cured.

Yup - that media was meant for vibratory tumblers. I have a couple of primerless rounds (no, I don't have a 9mm die set yet) in the mix and those came out sparkly clean. I did add a little simple green + water (about 6-8 oz total) about an hour into the tumble. Just curious to see how it fared.... now where did my wife hide the Lemmi Shine. I'll post pics of the setup when I get home - there's a way to set up the vibratory tumblers to be more efficient ... it's a trick you learn when you tumble stuff in bigger industrial ones on a regular basis.