JG bar-10 (budget build) WIP

Discussion in 'Sniper Rifles' started by adas1223, Jun 15, 2018.

  1. adas1223

    adas1223 Well-Known Member

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    IMG_20180615_192206.jpg

    Kicking this sniper build off with a bone stock JG BAR-10 with China glass i bought on sale from ASM for $90 shipped. nice feeling gun, smooth bolt pull with very minimal wobble. nice finish on most parts. mag release is a bit 'touchy' but read on as i have fixed this. the scope is fine. i like that this gun is light weight, but even with the scope, rail and rings, it all adds up. by the end of a 20 round magazine and shooting from standing position, my arm gets a slight shake.

    taking a break from Gas and AEG teching and trying my hand with BASR's. The twist is, I'll try to use as much stock parts as possible. the goal is to get torso hits @ 220ft, which i feel is realistic.

    I went with the bar due to it being the cheapest VSR clone with the highest parts compatibility. proven to have a strong pinned cylinder and head. weaknesses is the trigger sears which may cause slam firing, and also the right hooking hop up.

    baseline, it chronos @ 373 fps. Accuracy with 0.2's was spot on, getting headshots @ 150ft. Now with 0.3's, the hop was maximum and bbs start curving right. i'd have to cant the rifle to the left 15 degrees to make it float true without wind. this is due to the torque flexing the hop up arm.

    So far, I have tried to do some basic DIY mods to see if they actually hold true in adding performance from what i could read on ASF. The air brake mod did nothing. swiss cheesing the piston did nothing. Teflon taping the cyclinder head did nothing. Teflon tape and floss to the bucking did nothing. What i did discover and confirmed by another member on ASF is the grease they used (lots of grease on the piston and in the cylinder head threads) increased FPS by 15, which i lost.

    Other mods i did was polishing the inner barrel with brasso. cant tell any trajectory improvements as of yet. Also, I 3d printed a concave nub and glued it on the ground down stock arm. Now i can lift heavier bbs easily, although i still notice a slight right curve. Along with the concave nub, I did a flat hop on the stock bucking. we'll see the true test once my 0.43's come in.

    other non-performance mods i did:

    Cerakote air cure the trigger guard and bolt sniper grey (very fitting name)
    3d print a mock muzzle brake
    3d printed a Magazine pull (on thingiverse, maybe the best mod i ever designed, yet so simple)

    IMG_20180615_192305.jpg

    [​IMG]
     
    Last edited: Jun 16, 2018
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  2. Honeybadgerz17

    Honeybadgerz17 Well-Known Member

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    Quick question, is ASM on reddit
     

  3. BOA_SP3CT3R

    BOA_SP3CT3R Moderator Staff Member Moderator Supporting Member

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    ASM means Airsoft Megastore or usually the Airsoft Mechanics forum.
     
  4. adas1223

    adas1223 Well-Known Member

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    yup airsoft megastore
     

    Attached Files:

    Last edited: Sep 5, 2018
  5. Honeybadgerz17

    Honeybadgerz17 Well-Known Member

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    Didn't know if he meant airsoft marketplace lol
     
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  6. Chow

    Chow Well-Known Member Supporting Member

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    Subbed for future reference, looking forward to seeing the progress!
     
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  7. adas1223

    adas1223 Well-Known Member

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    Gun is currently apart about to get an AA m150 implanted tomorrow AM...

    but more about the "Magazine assist" i designed. heres the link on thingiverse if you want to print. LINK

    From the factory, the magazine is only held in by a front latch and a rear shelf. you must push the magazine only from the front to seat and click in the mag. Once clicked in, the button will rise a little. If you accidently brush/swipe the front of the gun, it will fall out. if you look at the button wrong, it will fall out. I initially wanted to just make a magazine release protector to "recess" the button. THEN in the process, I decided to make a magazine 'kicker' so you can start the extraction with a gloved finger to flick it out. THEN i figured, why not also add an enlarged circular pad so i have a larger pushing surface to seat the magazine from the front. the side wings are an added bonus to grip the magazine better when pulling out (she said it). These features together, you can now extract and change the magazines without looking down. very slim and low profile. I really wasnt a fan of the 550 cord mag pull, which members on ASSF most commonly did. my print would attach with double sided 3m tape.

    IMG_20180615_191943.jpg

    [​IMG]
     
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  8. adas1223

    adas1223 Well-Known Member

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    Heres a pic of the hop up nub I designed. The recess is made for a 6mm curve. the hight is high enough to add more hop to heavier BB's (past 0.3g)

    Once you shave the 2 'fangs' off the stock hop arm, just super glue this to the same area. its a bit Longer for more contact, of course once you shave the nub off the stock rubber.

    thingiverse link: https://www.thingiverse.com/thing:2933991

    [​IMG]
     
  9. bmadison93

    bmadison93 New Member

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    Also subbing for future reference and the sweet 3D printing links. Nice work so far OP
     
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  10. adas1223

    adas1223 Well-Known Member

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    Update: AA M150 installed (stock trigger group, spring guide, piston, cylinder and head). The spring I noticed is about 1 inch longer than stock spring (no issue whatsoever compressing it, comparing to AEG springs), with slight noticable rigidity. The bolt pull is only a bit harder but im pleased i can pull it easily! action is smooth, and no issues in bolt push!

    Chrono: on 0.2g getting 490fps with +-5fps variance. Im guessing i MAY be getting a bucking leak. we'll see. on 0.3g's getting 425fps. 0.43g's TBD

    Trigger pull is noticably harder but I adjusted the pull so short (any shorter, the trigger wont even move), its hard to notice. The 0.3g's fly amazingly more stable than 0.2 obviously. I can get it through my neighbors abandoned treehouse's small window consistently @ 230ft. (with very little hold over) the stock DIY flat hop and 3d nub is proving itself.

    I put about 500 rounds though the m150. Another thing to note is I removed the stock safety. I think its dumb. gets in the way of the bolt, i can see it accidentaly engaging in the moment. clips your fingers on the push.

    My safeties are still in place: finger off the trigger, always pointing in a safe direction, magazine out and uncocked. if i needed a safety while cocked!? ..but why? lol. i can easily flick the bolt handle up. BUT it wont prevent accidental slam fires. but neither will the stock safety.
     
  11. -Spitfire-

    -Spitfire- Well-Known Member Supporting Member

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    Neither will the stock sears
     
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  12. puskas70

    puskas70 New Member

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    So thi
    So this is your bar 10 nice work if you can shoot accurately through the window of a treehouse its going well.im impressed with your knowledge,can i send you.my mb03.:)
     
  13. -Spitfire-

    -Spitfire- Well-Known Member Supporting Member

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    I think you quoted the wrong post lol
     
  14. puskas70

    puskas70 New Member

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    Adas post on his bar 10 thats what i meant to replt to no bother.
     
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  15. kazuchan

    kazuchan Member

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    your cylinder color seem different than stock, right?
     
  16. adas1223

    adas1223 Well-Known Member

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    Yes, I cerakote it. The color is Sniper Grey.
     
  17. adas1223

    adas1223 Well-Known Member

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    Has a proper -14mm barrel with built in inner barrel spacer. printed a new threaded muzzle brake. also notice the side arm/backup

    bar 10 is resting on the scopecam/night vision scope

    IMG_20181116_124833.jpg in the background lol

    some other bits to note:

    I fixed the right curve with minor dremel/sanding job of the right sided of the 3d nub. PERFECT

    chrono'd fps on 0.2 is now 470fps, and with 0.43 is now 320fps.
     
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  18. Splode

    Splode Well-Known Member

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    Ive been messing with my bar 10. i shoot 480 fps with a m130. For some reason i get the feeling that im shooting too low fps for the .40s im using. About how far out do your bbs begin to drop? I have full AA parts in my gun. It seems decently accurate but there arent many other snipers around here to compare notes.
     
  19. adas1223

    adas1223 Well-Known Member

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    what kind of inner barrel are you running? (length and diameter?) i feel that is the only thing holding me back from 550+ fps but im also fine with not spending more $ lol.

    also, 480 fps on 0.2 or 0.4? im assuming the former.

    on my 0.43's with hop adjusted for maximum distance, and chronoing 300fps from the barrel, they are dropping by 200ft. Im holding maybe 1.5ft over a target to get 230ft but the groupings are tight.
     
  20. Splode

    Splode Well-Known Member

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    490 fps actually. sorry, typo. That is with .20s on a 6.01 AA. im not sure the length. id have to measure it later.
    Ok thats about where mine begin to drop with similar fps to yours. I had a m150 in there but i was getting 560 fps with .20s which... is a bit hot for most fields.
    What bbs are you using? Im gonna have to order some good ones. Ive been using ASG 40s because theyre the best the local shop has but at 20 bucks for 1000, im expecting better. They arent bad, but idk. just seems like i get floaters occasionally.
    Honestly though that is impressive with a basically stock gun. id imagine it might wear down relatively quickly with the spring you have in there though. My stock cylinder warped a bit from it. i just sanded the plastic spacers a bit and its back to butter.