New 3" Bag rider for Picatinny Rail Design

[urbanrifleman]

I have increased my printing temp and it has fixed some of the problems I was having with lines in the print. This one is for @Bamban

 

[urbanrifleman]

I am going to work on on a version that would bolt flat to any handguard using MLOK or KEYMOD.

I have the dimensions for MLOK as being an M5 fastener. I assume the Keymod is the same?

 

[Bamban]

I have increased my printing temp and it has fixed some of the problems I was having with lines in the print. This one is for @Bamban

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Ship it

 

[urbanrifleman]

Ship it

YOU TOO SLOW I ALREADY DID!! haha

 

[urbanrifleman]

OK, here is the MLOK or Keymod direct bolt on version. Should work with both version of the RPR as well as any other front tube with a flat on the bottom with either MLok or Keymod.

It is 6" long and 3/4" thick. I will not provide fasteners, but it appears that there are two types, #10-24 and M5. This will work for both.

 

[newbieshooter]

What's the height of the side of the bag rider?
thanks...

 

[urbanrifleman]

What's the height of the side of the bag rider?
thanks...

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.5"

 

[urbanrifleman]

Here are the two bag riders shown mounted.

The bottom is mounted to a picatinny.
The top is mounted to a Keymod/Mlok.

 

[urbanrifleman]

The Mlok/Keymod version is .75" thick.

 

[urbanrifleman]

Ok, I have a question.

I made an update to the picatinny rail rider to make it 6". Is this appropriate for the RPR?

 

[urbanrifleman]

Ok here are the final designs.

I have three bag riders (or I will). All will work with just about any flat rail type handguard.

The blue on the low profile picatinny and the screws straddle the rails exactly like a scope mount. The silver one is a picatinny that slides on from the end. And the black one will work on any Mlok or Keymod handguard with a flat face.

 

[Mark W]

I’m really liking the blue one. I think the lower profile will help with the rifle trying to torque in the rest. Here is the original version mounted on my AR.

 

[Ledd Slinger]

I'm making a quick detach 4" bag rider that attaches to my Area 419 Arca rail. I can maintain a very low profile using the Arca. Should work very good.

Was also planning on making a couple picatinny bag riders for AR rifles, but it's not worth my time and materials if I can buy a nice solid bag rider like that for $35 plus shipping. That's an excellent price!

 

[urbanrifleman]

I’m really liking the blue one. I think the lower profile will help with the rifle trying to torque in the rest. Here is the original version mounted on my AR.

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Awesome. I agree the lower profile would help, but I was only able to take out about half an inch of height .

The advantage of this one is that it simply slides on in seconds.

But the scope mount type would be stiffer, but more difficult to install. Both would be useful.

 

[Mark W]

I'm making a quick detach 4" bag rider that attaches to my Area 419 Arca rail. Should work very good.

Was also planning on making a couple picatinny bag riders for AR rifles, but it's not worth my time and materials if I can buy a nice solid bag rider like that for $35 plus shipping. That's an excellent price!

I agree! I had dabbled with a few designs myself but I’m really liking urbanrifleman’s stuff. This thing is lightweight and yet rock solid. It fits the rail like a glove and tightens down very secure.

 

[Mark W]

Ok, I have a question.

I made an update to the picatinny rail rider to make it 6". Is this appropriate for the RPR?

IMO, 6” won’t hurt but 4” or 5” would be sufficient. My 243 only moves in a couple inches in the bags.

 

[urbanrifleman]

IMO, 6” won’t hurt but 4” or 5” would be sufficient. My 243 only moves in a couple inches in the bags.

So, I should leave it 5"?

 

[Mark W]

So, I should leave it 5"?

Yea, I would. The EGW that’s on front of my RPR now is only 4” long and it works just fine.

 

[urbanrifleman]

OK here we go!!! One of the guys sent me a pic of the 3" picatinny that is used mostly on handguard where the bipod goes. It is 3" long and 7 slots.



So I modified the new low profile version to 5" long and it uses 7 slots apart on the attachment bolts.

 

[urbanrifleman]

Ok here is the FINAL design for the picatinny rail. It will fit on a 3" picatinny rail, has two through bolts that attach to the teeth of the rail, and is 5" long.

I just have to tweak the picatinny rail profile just a bit, but man I really like this.