Modern Sporting Rifle Evolution
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RangerJoe

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20" Lightweight 1:12 barrel, rifle-length gas system, MDWS Hybrid Muzzle Device (HMD) turned down to minimum profile (.700").  15" UTG Pro Super Slim free-float handguard.  Leapers 4-16x44 Side Focus, 30mm tube, illuminated mil-dot compact scope.  I went with a light-weight FLAXON gas block and AIM bolt carrier.

The barrel and HMD work were done by BiggDawg. I'll be sending him an Aero LW upper and a UTG Ultra Slim L/W handguard (with Titanium barrel nut) for CeraKoting FDE to match the barrel & HMD. Then I'll move the barrel over to the new receiver with new handguard.

I wasn't trying cut all weight at any cost... but was going after a lightweight gun to walk the desert with - in search of Zombie Jack Rabbits! 
IMG_0820_3.jpg


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BIGGDAWG

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Reply with quote  #2 
very nice looking build you have there. congrats.
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RangerJoe

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Reply with quote  #3 
Thanks!  The barrel maker is a real pro!  [biggrin]
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wikster1983

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Reply with quote  #4 
Nice rifle RJ! Be careful with complimenting that barrel maker, his head swells a bit! [tongue][biggrin]
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Hunter Big Jon

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Reply with quote  #5 
Nice build RJ. Don't let them Jacks snick up behind you it makes it hard to get a shot off before they bite your ankles. Lol
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RangerJoe

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Reply with quote  #6 
Quote:
Originally Posted by Hunter Big Jon
... it makes it hard to get a shot off before they bite your ankles. Lol
I know... right?!?!  I figure this here Viper will evaporate 'em!

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RIGGS68

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Reply with quote  #7 
That is a nice looking rifle! Isn't it nice when an idea comes together like that? Have you put it on a scale in the current iteration or are you waiting for completion?
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RIGGS68

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Reply with quote  #8 
Mine was not as planned as RJ's. Mainly comprised of items in the spare parts drawer....
24_Viper.jpg 

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RangerJoe

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Reply with quote  #9 
I'm waiting for the final form factor; new HG and upper alone should shave 6~8 oz off current. 

This isn't a dedicated lower... I use it for lots of uppers. When it is sitting in the safe, it wears a 17.7" B.A. Hanson .223 Wylde 3-gun profile barreled upper, 3-12x44 scope, and an AAC Ranger thread-on 5.56 can.  On the shelf are labeled mags full of M193, M855, M196 Tracer, SS190 AP, MK318, 60gr Nosler BTs, and Nosler 64gr BSBs.  I've not been able to land any M855A1s yet to try.

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RangerJoe

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Reply with quote  #10 
Quote:
Originally Posted by RIGGS68
… Mainly comprised of items in the spare parts drawer.... 
That barrel looks a week long... !!  [biggrin]  Nice build!  Yours is 1:10 or 1:8 twist?

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RIGGS68

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Reply with quote  #11 
Quote:
Originally Posted by RangerJoe
That barrel looks a week long... !!  [biggrin]  Nice build!  Yours is 1:10 or 1:8 twist?

The barrel is only 24". Probably the same length as yours with the HMD. Mine is a 1:8 twist. The intent was to experiment with the 55 Bergers, however, word on the street is that those, as well as the Hornady 45 grain SP, are being phased out (discontinued). So if you want either, I would get them now....Midway has the 45 SP on sale.

https://www.midwayusa.com/product/1010923822/hornady-bullets-20-caliber-204-diameter-45-grain-spire-point-box-of-100
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RangerJoe

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Reply with quote  #12 
Good to know.  My intent is to stick with 24~40 grain anti-zombie pills for my Viper.  I have bigger bores to shoot heavier bullets.

While a .20 cal has little muzzle jump to start with, with the addition of the HMD, my muzzle stays SOLID, even as lite as it is.  I can watch every hit on the paper & steel.  Soon, the Jacks will be coming out of hibernation and/or migrating back across the border.  I expect to be able to see every pink-mist puff, and be ready for doubles & triples as the opportunities present.  And - it looks cool!  LOL (to me)

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Rick9144

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Reply with quote  #13 
Great looking build
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BIGGDAWG

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Reply with quote  #14 
Ok here is my 20 Viper 

i finished it on my lunch hour.

26 inch spr profile, rifle gas, bear creek side charge upper and carrier. anderson lower with phase 5 ambi bolt release, mbt2 trigger, luth ar stock with vtab butt plate adapter. trinity 15 inch hand guard.

20190305_115900.jpg  20190305_115730.jpg  20190305_115700.jpg 


STINGER and VIPER ready for action.  i want to see 5000 fps with the stinger 


20190305_115844.jpg 


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RangerJoe

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Reply with quote  #15 
BiggDawg must be getting bored with gun-metal grey, burnt-bronze, FDE, Sig-black, and his other "traditional" CeraKote colors.  [rolleyes] [thumb]
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BIGGDAWG

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Reply with quote  #16 
Quote:
Originally Posted by RangerJoe
BiggDawg must be getting bored with gun-metal grey, burnt-bronze, FDE, Sig-black, and his other "traditional" CeraKote colors.  [rolleyes] [thumb]

yep but i have never been a fan of fde lol these are smoking cats so i want them to stand out as such and i doubt there will be much left of anything i shoot with them to complain about the color of the gun  [biggrin][biggrin][rofl][rofl]

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Bajabusdoc

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Reply with quote  #17 
Can I get size you turned the HMD to, and any thread left for set screw or did you just pin it?
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BIGGDAWG

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Reply with quote  #18 
Quote:
Originally Posted by Bajabusdoc
Can I get size you turned the home too and any thread left for set screw or did you just pin it?

The HMD on Ranger's rifle I turned to around .700.  It is a 1/2x28 so there was enough meat there to do it. only a little left for set screw i told him to use a crush washer.  The 5/8x24 I turned down to around .780 (I think), will have to go measure one when i am at the shop.

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Carl S.

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Reply with quote  #19 
Quote:
Originally Posted by RangerJoe
20" Lightweight 1:12 barrel, rifle-length gas system, MDWS Hybrid Muzzle Device (HMD) turned down to minimum profile.

Very nice, clean and simple.
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RangerJoe

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Reply with quote  #20 
Quote:
Originally Posted by Bajabusdoc
Can I get size you turned the HMD too and any thread left for set screw or did you just pin it?

I used a spacer and a set screw... not the brass tipped original (it was too long), but found a short one to fit.  Let me tell you, the HMD works!!! Being even lighter weight, I think it is more effective.

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RangerJoe

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Reply with quote  #21 
I fired my Viper this evening for the FIRST time at a flesh & blood target.  A big Zombie Jack at 127yds (per laser) from improvised kneeing position against a small tree.  Unfortunately, I missed.  I was shooting new ammo loaded today (29.7gr CFE w/32gr NVG-HP) that has never put on paper... so honestly, I have NO idea where the bullet went.

I also wasn't wearing Ear-Pro... typically not a issue for 1 shot from a 20" barreled small-bore rifle; I've fired LOTS of M16 rounds without ear-pro.  WRONG-O!!  Holy Ringing Ears Batman ... 2 hours later I still hear it!  My best guess is the vertical ports on the HMD directed sound somewhat more rearward than a standard birdcage FH.  Whatever the cause - I won't be shooting that configuration again without ear-pro! 

For grins & giggles, I may try replacing the HMD with a BRT Covert Comp to see how it sounds for hunting.

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