kel tec RDB /M43 video

if I remember correctly it was long stoke and they change it to short stroke. They also changed from reciprocating to non reciprocating handle.

You are correct. I re-watched it and at 3:36 the tech does say it is indeed short stroke. Still, the bolt carrier will have a similar visual similarity to the long stroke piston of the AK, as you can clearly see the "operating rod" cycling the full distance between each shot.
 
On the video KelTec guy says at 3:46 it is a short stroke piston.

Ejection downwards at the end of the stock will be very bothersome in most of the shooting positions except standing. Hot brass will hit you on the arm and fall into your clothes all the time. See 19:55 and up. If you are standing and you are wearting shorts or sandals or tactical flip flops - the hot brass will pile up right in there.

On a bench or prone with a rest or bipod the mag sticks out at the point which prevents you from resting the back of the stock, you will have to rest it on the mag itself which may lead to feeding issues. With recoil the gun will balance of the mag and transfer the force to the well and the bottom of the bolt. Not so good.

Muzzle break is totally stupid "tacticool". It is .223 - what huge recoil dictates the break? If you want capitalize the shortness of bulpup concept - you are adding 2.5 inches and make it longer for nothing. If you want to trade the bulpup for barrel length - just add 2-3 inches of a barrel instead of the break. The ballistics will be better plus some mass to reduce recoil. Not a 400 Jeffrey here.

Mag release will be uncomfortable with operate with back of your palm due to the shape of the mag well going at the angle away from the hand and up as the show. You still will have to press and pull it with you support hand.

Length of pull is not adjustable. No provision to fit aftermarket or modified stocks or cheek piece. The butt plate seems to be at integral part of the receiver. The butt plate has a narrow shape sticking out at the bottom such that it will hook on your clothes, belts. LOAD BEARING tacticool gear on your chest.

Bolt carrier is open on both sides with large slits. No dust cover is built in even for transportation mode. Charging handle reciprocates with action. Bolt release button is located at very awkward spot.

I wouldn't even consider this design when you have Tavor on the market. Just saying.
 
On the video KelTec guy says at 3:46 it is a short stroke piston.

Ejection downwards at the end of the stock will be very bothersome in most of the shooting positions except standing. Hot brass will hit you on the arm and fall into your clothes all the time. See 19:55 and up. If you are standing and you are wearting shorts or sandals or tactical flip flops - the hot brass will pile up right in there.
I've used the KSG which has a similar ejection system and haven't had any issues with hulls ending up in strange places. You are right, I wouldn't want to be wearing rubber boots with no socks or flipflops while shooting it but you'd have to have your arm in a very strange position to have brass hit you.

On a bench or prone with a rest or bipod the mag sticks out at the point which prevents you from resting the back of the stock, you will have to rest it on the mag itself which may lead to feeding issues. With recoil the gun will balance of the mag and transfer the force to the well and the bottom of the bolt. Not so good.
This point I can see, it doesn't have a rear point which you can sandbag the rifle, for me this is a non issue but for others it may be a deal breaker.

Muzzle break is totally stupid "tacticool". It is .223 - what huge recoil dictates the break? If you want capitalize the shortness of bulpup concept - you are adding 2.5 inches and make it longer for nothing. If you want to trade the bulpup for barrel length - just add 2-3 inches of a barrel instead of the break. The ballistics will be better plus some mass to reduce recoil. Not a 400 Jeffrey here.
Because its the LCF, I'd rather have a threaded barrel than a couple extra inches (I know, who wouldn't want a couple extra). I'm not shooting anything other than paper so having a bit more energy down range is again a non issue.
Mag release will be uncomfortable with operate with back of your palm due to the shape of the mag well going at the angle away from the hand and up as the show. You still will have to press and pull it with you support hand.
I found it very easy to make a direct pressure backwards with the back of my thumb to have the magazine drop. My hand barely had to move from the firing position to activate it.

Length of pull is not adjustable. No provision to fit aftermarket or modified stocks or cheek piece. The butt plate seems to be at integral part of the receiver. The butt plate has a narrow shape sticking out at the bottom such that it will hook on your clothes, belts. LOAD BEARING tacticool gear on your chest.
We need the butt to be an integral part of the receiver, look at the High Standard shotgun and ask those owners how they feel about having their buttplates confiscated due to them being "prohibited devices" also: how is it any different from 90% of all other bullpups in this feature?

Hooking gear? how is that any different than the standard AR butt plate? if you don't have a sling on the factory sling attachment could also hook.

Bolt carrier is open on both sides with large slits. No dust cover is built in even for transportation mode. Charging handle reciprocates with action. Bolt release button is located at very awkward spot.
From what I've read the charging handle is not going to be reciprocating anymore. You are correct on the bolt release though, that was one of my bigger hang ups on the design but I can rack the charging handle and be satisfied.
I wouldn't even consider this design when you have Tavor on the market. Just saying.
The Tavor is the better battle rifle, by far. If that's what you're looking for. I wouldn't buy the M43 expecting it to be on the same level as a rifle designed as the primary weapon used by a military force.
rally guy said:
How did the 2 gun feel?
I loved it, felt solid for a stamped steel gun. The RBD felt similar to the RFB but lighter. The only issues I had, the safety on the prototype M43 was sort of in the way but on the RBD it was a bit better. The bolt release is a little awkward and I would prefer to use the charging handle myself.
 
I've used the KSG which has a similar ejection system and haven't had any issues with hulls ending up in strange places. You are right, I wouldn't want to be wearing rubber boots with no socks or flipflops while shooting it but you'd have to have your arm in a very strange position to have brass hit you.

Well it depends on you physic and proportions of your arms, but it does not work for many people. See at 3:42:
http://www.youtube.com/watch?v=BVVii2K1j5k

Because its the LCF, I'd rather have a threaded barrel than a couple extra inches (I know, who wouldn't want a couple extra). I'm not shooting anything other than paper so having a bit more energy down range is again a non issue.
Ok, let me rephrase my point - It seems to me that the muzzle break is not in proportion. Way too large for this kind of energy in a gun which is specifically designed to be as short as possible.

Hooking gear? how is that any different than the standard AR butt plate? if you don't have a sling on the factory sling attachment could also hook.
With conventional AR standing in a shooting position, remove support hand from the gun. The gun will want to drop forwards (muzzle is in front of the shooting hand holding the grip). With bullpup remove the support hand - the gun will drop back and down because the grip is in front of the center mass. Such that every time the butt plate will tend to slide down and hook to things on your chest, while with AR the buttplate will move up on itself as muzzle tends goes down. If you check TAVOR back and bottom end you will see that specifically made if smooth and straight without "hook butt plate" sticking down. Look at FN F2000 - same thing, AUG - same thing, straight line and then up. FN P90 - same. I guess it is never and issue when all of your shooting is done in a T-shirt, but if you start moving in any heavier gear and bring the gun up to change mags this RDB will hook up on things.

Anyway, I'm all for it for the fun and low price. Just seems to me they can improve it quite a bit.
 
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