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  1. B

    AR Tuning question

    Update: Couldn’t take it. Pulled buffer weight. It’s an h1. I disassembled and took out one weight and put in a wooden dowel. First 1 round mag I got lock back, which I previously only got on the jp scs from one of my other rifles. I went bleed through mode about 3 clicks less gas, no more...
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    AR Tuning question

    Right on. I did have a lock back prob after a couple thousand rounds on an spr with bartlein barrel with the same SA gas block system. I swapped the SOLGW bcg for another and and it’s run fine ever since. I assume the gas key was leaking just enough to screw up the gas. That bolt has worked in...
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    AR Tuning question

    I guess I should check the rings, but I changed the bolt out to a new bcm with the new barrel. There’s less than 2000 rounds on this barrel and bolt. Per magazines, I’ve used about 10 of my training pmags in the class and a couple GI and the same pmags last weekend tuning. They lock back on...
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    AR Tuning question

    10-4. Thanks everyone. I can’t remember for sure but I had the gas turned down from say 18 clicks on the SA arms block (full open) to around 25 (bleed off) or so for the class. (Xray alpha/Stoeger) Stock bcm buffer components. It ran like a Swiss watch. It was ejecting between 3 and 4. This...
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    AR Tuning question

    Yes, I went through the entire gas block adjustments 2 clicks at a time with 1 round magazines. Finally with the stock spring on jp scs and weights, I got lock back. With pretty much full gas. I turned gas 2 clicks either way and no more lock back. Yes. Little recoil. Dot will hold the upper...
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    AR Tuning question

    I haven’t weighed the buffer it’s self but it’s whatever comes in a stock bcm lower.
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    AR Tuning question

    Yes, I did that Saturday when I was trying to tune this thing. The bcm device runs fine but the sjc has the “no lock back on last round.” I did all barrel work with the Geisselle action rod and snap on wrenches. The rifle runs like a sewing machine with or without Brake but no lock back on...
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    AR Tuning question

    Thanks guys. I had a buddy verify gas port alignment with a scope. It’s dead nuts. Might mess with the weights on an SCS before pulling the gas block/rifle apart. I’ll report back soon.
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    AR Tuning question

    I have a BCM 14.5 rifle with stock bcm buffer system. I shot out the stock barrel, rebarreled with Gieselle 14.5 chf. Superlative adjustable gas. Stock bolt. I ran it in a class for 1500 rounds. No problems. I put on an sjc titan brake. The rifle runs but will not lock back on the last round...
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    AR Positional POI Shift Test

    Scott, how are you running your gas guns when on the bipod? Forward loaded, completely neutral, rearward pressure into shoulder, or other??
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    14-15” Arca rail Recommemdations

    Thanks for the ideas. I ended up figuring out the barrett Area 419 rail will work on an Mlok rail and went that route even though it was way more $$
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    Is it possible to become a really skilled long range shooter with a semi-auto?

    Ironically I can group my 308 gasser better, consistently, than my 6.5 bolt gum. FWIW.
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    14-15” Arca rail Recommemdations

    I’m currently running the 14” area 419 Arca rail with the barricade stop on my SPR. The rail is a 16.75” Sons M89 Mlok rail. I cannot find any rails longer than 12” without the barricade stop the Area 419 has, close to the mag well. Is there any thing out there without the stop?
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    Feeding issues solus with KRG bravo

    2 hours shop time and they got it running like a clock. Was told they had to modify and weld the mag latch and machine something on the action. Will be shooting it after I get it back in a few days.
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    Feeding issues solus with KRG bravo

    Sent this whole rig out to Short Action Customs, (after messing with mag tuning for a couple hours… )who did the barrel and action work, to get this all straightened out. Will report back
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    Feeding issues solus with KRG bravo

    Will order a tuning tool and try that next but according to my mic, they are set at masterpiece arms spec. All of these mags ran flawlessly with the same action in a manners t4 with badge metal
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    Feeding issues solus with KRG bravo

    After another range day after I thought I fixed my feeding issue, after about 6-8 rounds, they came back. Every 2-3 rounds, nose diving. Noted excessive front to back wobble in mags. Used pmags, aics and mdt. Pulled everything apart for about the 10th time. Pushed trigger guard forward almost...
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    Feeding issues solus with KRG bravo

    That’s my feeling at present. I have the adjustable mag catch on order, I’ll see what happens.
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    Feeding issues solus with KRG bravo

    Thanks man! As much as I hate the idea of all this tuning on something that should just work, I’ll be ordering the mag catch ASAP
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    Feeding issues solus with KRG bravo

    Did you credit the mag latch as the solution? I’ve had feeding problems for months on my Whiskey 3 enclosed fore end. I’ve readjusted the trigger guard and fore end about half a dozen times and tried pmag, mdt, accuracy and factory aics mags and all still fail to feed. The last adjustment...
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