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Author Topic: bullpup 870 conversion  (Read 5231 times)

G1user

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bullpup 870 conversion
« on: August 23, 2010, 09:28:09 PM »


...yes, thats a standard 870, permanently custom modified (end of the rcvr milled off to square) to exclusively function as a defensive bullpup.
FCG has also been tuned, and the forcing cone recut for tighter shot cloud.
A series of simple, but precise "bolt-on" milled aluminum parts attaching to the rcvr (and are removeable with torx screws), said plates and rcvr all bear directly on buttstock, so no fasteners take any stress during firing.
EOtech, shotshell tote, and pistol flashlight added--the flashlight does double duty as the front sight post just fine, so frankly no irons are needed.
Weighs about 10 pounds. Very stable and intuitively ideal for tracking moving targets, day or night. Recoil is straight back down the stock, so there is no muzzle climb on firing.
Steel barrel shroud serves as barrel armor, and integral muzzle cut outs are nice and sharp, and serve as a "muzzle anchor" (in doorframe or for "close contact"). Shroud also is tooled to receive steel mounting blocks for the usual accessories.
It ambidextrous, and balances on the pistol grip, and is fully capable of operation in one hand in single shot mode of course.
Also a very compact package.
Loading, aiming and shooting, are all very consistent, and very fast.
Very, very fast.
The flashlight is operated by the toggle switch on the back of the light, and the front handguard is not sleeved, so you just reach up with your front thumb and finger and flick the light on, aquire, check, fire and release. In darkness it is like a bolt of lightning.
Trigger is just an actuator that operates on an isolated transfer bar acting on the original 870 fire controls, which are tuned for proper fit, but unmodified in function. Crisp, clean and consistent every time.
Since this is a pump action SG, and is intended as a bona fide defensive firearm (as distinct from a "club"), the factory "safety switch" is therefore superfluous, so it is left as is, but abandoned (locked out by coverplates in the failsafe "fire" position).

For liability protection, the barrel is actually a bit longer than factory built, at about 18 and one half of one inches; overall length is just under 27 inches, less the buttplate assembly, thus guarding against a malicious enforcer removing the buttstock or rubber pad assy to generate violation, even so, it would still measures over 26 inches overall with the buttstock removed and thrfr in full compliance with no way to "game it" to the contrary.
« Last Edit: August 23, 2010, 09:52:46 PM by G1user »


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GeorgeHill

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Re: bullpup 870 conversion
« Reply #1 on: August 23, 2010, 09:38:10 PM »
Where did you get that?
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G1user

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Re: bullpup 870 conversion
« Reply #2 on: August 23, 2010, 09:41:51 PM »
Where did you get that?


The 870 is just an off the rack, factory 870 police with the long tube.
Been stripped and phosphate coated of course.
A bud of mine makes these as a custom conversion "package" (i.e. kit plus fitting and tuning).
That one is his personal "...just one gun..." with all the accessories needed, no more, no less.

slugcatcher

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Re: bullpup 870 conversion
« Reply #3 on: August 24, 2010, 08:34:40 AM »
It's early and I'm a little slow to begin with.... How is it ambidextrous? I don't see any action bars either.
Your ideas intrigue me and I would like to subscribe to your newsletter.

Splodge Of Doom

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Re: bullpup 870 conversion
« Reply #4 on: August 24, 2010, 09:38:23 AM »
That thing looks horrible.

...

Yes, I want one.  ;D

tactical22

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Re: bullpup 870 conversion
« Reply #5 on: August 24, 2010, 10:52:24 AM »
Hideously fascinating.
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Re: bullpup 870 conversion
« Reply #6 on: August 24, 2010, 11:11:02 AM »
picture fix anyone?

meh, i dont know, i have wood on my 870 so i dont think i will ever do anything to the stock.
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BoomieMCT

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Re: bullpup 870 conversion
« Reply #7 on: November 09, 2010, 04:48:07 PM »
1)  Where is the slide and action release?

2)  Is it awkward to load?

sohmdaddy

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Re: bullpup 870 conversion
« Reply #8 on: November 11, 2010, 04:26:08 PM »
That is an interesting idea, it looks weird, but how do you pump it?

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Re: bullpup 870 conversion
« Reply #9 on: November 23, 2010, 09:30:14 PM »
Whiskey Tango Foxtrot, over.
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Doug Wojtowicz

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Re: bullpup 870 conversion
« Reply #10 on: November 23, 2010, 09:46:47 PM »
It looks as if you yank the pistol gripp to pump... right?  Especially considering the line about operating it one-handed.  The grip is in the right position for it. 
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ABNARTY

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Re: bullpup 870 conversion
« Reply #11 on: December 05, 2010, 10:13:16 PM »
Help me out on this....

I LOVE the 870. I got three of them and have no hesitation to get more. Maybe even this...beautiful creature.... :shrug

How does one rack a new round into the chamber? No matter how I look at it, I cannot see a comfortable/efficient way to make it happen. The original design is about as simple as it gets short of a breech loaded weapon. To get to the bullpup capability, did that simplicity get lost? HELP!  ??? ??? ???

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Re: bullpup 870 conversion
« Reply #12 on: December 10, 2010, 12:00:34 AM »
No offense to the OP, but a video of this build in action would be of great help. At least some more detailed pictures from different angles. I'm not saying this is the case, and I am not calling shenanigans, but my detector is showing some readings on the scope. I hope those readings are false. I really do.

Again no offense or insult to the OP. Just a lot of questions and curiosity.

Car 4

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Re: bullpup 870 conversion
« Reply #13 on: December 10, 2010, 12:44:22 AM »
No offense to the OP, but a video of this build in action would be of great help. At least some more detailed pictures from different angles. I'm not saying this is the case, and I am not calling shenanigans, but my detector is showing some readings on the scope. I hope those readings are false. I really do.

Again no offense or insult to the OP. Just a lot of questions and curiosity.

Also no offense intended....but I have a small problem with the photo itself. I guess I would like to make sure this isn't photo shopped....but it may be.



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