The best way to convert people is to take them shooting on a fun range day.
Yes, not a gas issue. Could be a bad ammo lot, but probably an issue with the internals.Well karma happened quickly this time. Took the RDB to the range for the first time last night and had 10 rounds out of 100 not fire. Looks like lite primer strikes. Tried increasing the gas but still had no luck eliminating the issue. Ammo was PMC X-TAC 5.56. Kel Tec was great when I called them this morning. Sending the rifle back for repair.
It was a great shooter when it went bang. Got it sighted in and had a lot of fun, even with the failure frustrations. So nice not having brass & gas shot across my face.
Did you clean it before going to the range for the first time? With my sub2000 I had ejection issues at first but thought more rounds would break it in. Didn't help much. Read a tip here that Kel-Tec uses a sticky antirust coating in the factory that needs to be cleaned off before use. I tried that and the issues mostly went away. I still have occasional feed issues but I'm trying to determine if it is magazine related because I'm using a variety of brands and sizes.Well karma happened quickly this time. Took the RDB to the range for the first time last night and had 10 rounds out of 100 not fire. Looks like lite primer strikes. Tried increasing the gas but still had no luck eliminating the issue. Ammo was PMC X-TAC 5.56. Kel Tec was great when I called them this morning. Sending the rifle back for repair.
It was a great shooter when it went bang. Got it sighted in and had a lot of fun, even with the failure frustrations. So nice not having brass & gas shot across my face.
Desert Tech has the Mdrx in 300blk,and its availible.But it requires you change out the recoil spring, they use for the other calibers for a short one,deleting the moderately fast caliber change feature the gun has.If they can do a 300 Black out for subsonic it would be a huge seller.
I forgot about the gas port. The IWI Travor x95 works in 300 Black out, but pricey.. With the new brace rule the market should be good for bullpups .
Yeah, my history with the MDR was an order for one chambered in 300BLK. Back then I had to order the MDR in something else (.223 wylde) and also order a conversion. I got disgusted after 5 years of waiting and cancelled the conversion with the .223 Wylde in hand (after 4 years). Built my own AR 300BLK after researching the (IMO) optimum build and never regretted it. It was more $ but IMO better all around. Since 300BLK subsonics can be tempermental as to build I expected to tailor my handloads to the gun and yes, they require tweaking. But ALL my loads get tweaked to every gun I load for. If I had waited for a working 300BLK conversion it would have been another 2-3 years (I stopped counting after requesting my refund). Looking back on it I don't think Desert Tech had a clue what was involved in a 300BLK conversion before they began taking $ for them.Desert Tech has the Mdrx in 300blk,and its availible.But it requires you change out the recoil spring, they use for the other calibers for a short one,deleting the moderately fast caliber change feature the gun has.
So...IM gonna tell you..You may have dodged a bullet with the initial run of 300blk MDRX's.. Sounds like they only made about 100..And..The adjuster doesn't correspond with the port hole openings. Meaning: you may think your running Normal/supersonics but you actual opening is for subsonic loads. Causing you to wreck the rifle..I sorta looks like someone wasnt following the instructions and just randomly placed difference size openings instead of them getting sequentially larger.Yeah, my history with the MDR was an order for one chambered in 300BLK. Back then I had to order the MDR in something else (.223 wylde) and also order a conversion. I got disgusted after 5 years of waiting and cancelled the conversion with the .223 Wylde in hand (after 4 years). Built my own AR 300BLK after researching the (IMO) optimum build and never regretted it. It was more $ but IMO better all around. Since 300BLK subsonics can be tempermental as to build I expected to tailor my handloads to the gun and yes, they require tweaking. But ALL my loads get tweaked to every gun I load for. If I had waited for a working 300BLK conversion it would have been another 2-3 years (I stopped counting after requesting my refund). Looking back on it I don't think Desert Tech had a clue what was involved in a 300BLK conversion before they began taking $ for them.
My MDR is an anchor and I had no thoughts that it would be a lightweight even years before I received it, I knew what to expect so I'm not casting aspersions on it's weight, not really as a .223 Wylde. I didn't design my 300BLK AR build to be lightweight but it's still lighter even with it's can in place that's designed to handle .300 Win Mag, and if I remember correctly, still a hair shorter than my MDR with the can that's on it 24/7/365. It's a dense AR, deceptively heavy, but also built right. IMO the MDR would be too heavy for it's role as a CQB rifle. That's where I was going with this paragraph. But if I want a reliable extreme cold weather rifle the MDR is the one I choose due to it's massive internals and the tiny cartridge it pushes.
OK, a bit off subject... Why don't ammo manufacturers tell us what their 300BLK is ammo is designed to work with? I have factory ammo on hand that is clearly designed for manual actions. The few (one?) that works with a self loader designed for CQB, which is what the 300 BLK is designed for, claims to be suppressor friendly and it is. Supersonic is easy to make work in pretty much ANY 300BLK. The ammo boxes need more data on them IMO. That's if they care about actually selling ammo to the consumer who can use it. If they just want to sell ammo and piss people off they're doing it right. I don't want factory ammo that turns my semi-auto into a manual action. I don't buy factory ammo anymore, so their one time sale to me is their last sale to me. They made one minor sale, that seems sorta like not what they would want, or I wouldn't want that if I was in the factory ammo business. Whatever. I don't have $ invested in their businesses. They do. Those folks with bolt actions and single shots can use anything that fits in the chamber.
edit: (I forgot some stuff)
Recently they introduced the really short MDR. It seems tailor made to be chambered in 300BLK and that's the only way they could get me to do business with them again. Yet, last I checked it wasn't chambered in that. OK. I don't get it.
Thanks. I probably would have gotten one of those and I'd be even less happy with DT had that happened.So...IM gonna tell you..You may have dodged a bullet with the initial run of 300blk MDRX's..
Yes. Changing the recoil spring on the MDRX requires a vice and some tools (and red Loctite) vs an allen wrench and a barrel (for 6.5creed,308,556.). Once the 300Blk spring is in, you'll probably want a new BCG with the old recoil spring (DT will sell you one for 650$)..Otherwise you'll have to reverse the process a day or so before going to any of the other calibers..I haven't shot the updated kit with my configuration, but I was told (I currently use the 308/223/6.5creed recoil spring) that it will not cycle subsonics with that recoil spring attached.edited
Changing the recoil spring... I built my AR specifically to use standard off the shelf AR components yet still be reliable. Even so I have to tweak the ammo. From what you write it sounds as though DT is trying to get the MDRx to do something it's ill suited to do...
Lest folks think I don't like the gun, I like it quite a bit. I have had issues with the company*, but they make a good rifle, and I would use different words if I had problems with the rifle.*For those reading, I have not had any major issues with my MDRX, but I know folks who have..So I follow the facebook pages and reddits.
