BCL 102 stripped receiver set thread
- Thread starter DILLIGAF
- Start date
Mystic Precision
CGN Ultra frequent flyer
- Location
- Summerland, BC
Any confirmation if the Gen 2's use the same DPMS speced barrel extension on the barrels as on Gen 1?
Jerry
Jerry
M&P 9mm ProSeriesShooter
Member
Gee if only there was a spec sheet/owners manual for the rifles...
bro, i wont know till i change the barrel and Im worried about making a 600$ mistake... sigh
this gun is full facking maybes
Jerry, I just received my Gen 2, two weeks ago, and I put a standard DPMS style barrel on in .338 Federal, I also had them headspace a JP ENT bolt and everything works good. I tried the BCL bolt in my rifle and it fit, I never checked for head space with the BCL bolt
Mystic Precision
CGN Ultra frequent flyer
- Location
- Summerland, BC
Thanks.. that is great info. So the JP bolt worked with the Gen2 carrier?
Be nice to get a few confirmations before I offer out replacement barrels. As was said, hate to make a big $$ mistake.
Jerry
That is not certain my aeroprecision bcg would not fit in my gen 2, but the aero bolt fits in the factory carrier
so... maybe
Throttle_monkey1
CGN Ultra frequent flyer
Got notification today that they’ve replaced my barrel, test fired the upper and shipped it back to me. I’m excited to get it back.
trigger'06
CGN Regular
- Location
- Abbotsford B.C.
I headspaced factory combo with Clymer gauges, good to go.
Headspaced factory barrel with JP bolt carrier assy, good to go.
I havent found my 150 gr handload yet but 168 gr GMM is really tight.
Mystic Precision
CGN Ultra frequent flyer
- Location
- Summerland, BC
Thanks
Jerry
Jerry
Its called ; figure it out on your own
So Far Gen 1 is the only one that takes everything without fitting. All my parts I used had zero fitment issues.
I have a warrenty claim in for the take down pins. They are so loose its not funny. I have DPMS ones on order from Brownells but they are B/O
The holes on my BCL 102 are all over the place. Ill drill them all to .275 and install new pins if the crap BCL send me doesn't fix the issue.
Front lower hole .2495
Rear lower hole .248
Both upper holes .250
Both pins are .2415
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Its called ; figure it out on your own
So Far Gen 1 is the only one that takes everything without fitting. All my parts I used had zero fitment issues.
I have a warrenty claim in for the take down pins. They are so loose its not funny. I have DPMS ones on order from Brownells but they are B/O
Yup, mine are pretty loose. Let me know the resolution.
Some of us ordered a few of them so likely there will be some available when we get them. They are not expected to be available till May. But who knows if they will release more. They said it was a one time run for the stripped receivers only but who knows.
Sunchild2071
CGN frequent flyer
- Location
- Glen Park, AB
Its called ; figure it out on your own
So Far Gen 1 is the only one that takes everything without fitting. All my parts I used had zero fitment issues.
I have a warrenty claim in for the take down pins. They are so loose its not funny. I have DPMS ones on order from Brownells but they are B/O
The holes on my BCL 102 are all over the place. Ill drill them all to .275 and install new pins if the crap BCL send me doesn't fix the issue.
Front lower hole .2495
Rear lower hole .248
Both upper holes .250
Both pins are .2415
So I read that as less than 1/100th of an inch from pin size, to the largest holes. 2/1000ths of an inch min-max hole size as measured.
No spec from BCL, but we know that. My complaint on other threads is how this entire site is absent of specs/tolerances/etc., of various platforms.
So what is the acceptable tolerance in "milspec" (meaningless word without figures to compare to) AR-15 takedown pins? Or original AR-102 takedown pins? Takedown pins - generally, being designed as to be a manual(?) or tool(pin push or bullet tip?) operated pin, which is tight tolerance, but I am gleaning from your info that it is less than 65/1000ths of an inch? That being the difference between the pin and the tightest hole and being "so loose it's not funny".
Things I wonder when I have too much time on my hands.
Sunchild2071
CGN frequent flyer
- Location
- Glen Park, AB
Loose is loose, sure. But I still wonder what the numerical value would be. While you joke about being OCD about things, I tend to fall that way also. At some point, a tight pin becomes loose, from extended use. So what is the value of acceptable clearance? Min/max values of the pin? Min/max values of the hole? I like measuring things, also. I do it often to assess wear, and to establish when something needs replacing. Common information available for things for example like - engines. Why not for rifles. Going past recommended tolerances increases wear at exponential rates as compared to replacing while tolerances are still being maintained.
It's a firearm. Going by gut feel of what is right wouldn't work so well for the reloaders. There seems to be plenty of published data for them. So what about published data for maufactured components used in an assembly to fire those cartridges?
65/1000 = too much play. 2/1000 is by general engineering principals minimum clearance for slip-fit, generally for a single hole/single pin. Multiple holes, require added tolerance to function, as a relation to manufacturing tolerance of hole locations x 3 axis.
You'd think on a site like CGNutz, there would be at least one individual somewhere, that has a tie to a manufacturer somewhere, that can define this value. Max. takedown pin clearance = X. I think I asked in another thread why there is no sticky on these manufacturing values.
Perhaps even a resident machinist or tool and die maker?
Can anyone define the milspec value or commercial value of X above? Or just more to add to my never ending suspicion that this is just the Home Shopping Network for firearms, lol.
So what size are the Brownell's pins that you would drill .275 for? Might be a hint of the acceptable tolerance, in that answer. An I and J drill bit are respectively too small, and too large for .275. Are you going to I drill and hone to .275?
Not trying to bust your balls - too much time on my hands, as mentioned. So wondering how you would make a .275 hole?
It's a firearm. Going by gut feel of what is right wouldn't work so well for the reloaders. There seems to be plenty of published data for them. So what about published data for maufactured components used in an assembly to fire those cartridges?
65/1000 = too much play. 2/1000 is by general engineering principals minimum clearance for slip-fit, generally for a single hole/single pin. Multiple holes, require added tolerance to function, as a relation to manufacturing tolerance of hole locations x 3 axis.
You'd think on a site like CGNutz, there would be at least one individual somewhere, that has a tie to a manufacturer somewhere, that can define this value. Max. takedown pin clearance = X. I think I asked in another thread why there is no sticky on these manufacturing values.
Perhaps even a resident machinist or tool and die maker?
Can anyone define the milspec value or commercial value of X above? Or just more to add to my never ending suspicion that this is just the Home Shopping Network for firearms, lol.
So what size are the Brownell's pins that you would drill .275 for? Might be a hint of the acceptable tolerance, in that answer. An I and J drill bit are respectively too small, and too large for .275. Are you going to I drill and hone to .275?
Not trying to bust your balls - too much time on my hands, as mentioned. So wondering how you would make a .275 hole?
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KB_TheDireWolf
Member
Well, I just made my last payment to SFRC for my 102 receivers set (thank you to SFRC for lettting me do that). From I have seen hope the receivers sets are to spec and everything works out for me. Not ordering anything big until I get the set and go to Alberta Tactical Rifle tell figure out compatibility, because, BCL all is being a pain in the *ss by the seems of it. Nice to be local to a company that deals specifically in ar-type rifles.
Anyway, a nice thing is that my $500 C-1500 went a round with a Audi Q4. It won and the insurance doesn't think it's a crapy 500 buck truck, so a nice payout to me lol. Oh, and somebody gave me three Enfields, he was just going to turn them in. Sometimes the stars just aligned. Let's hope it stays that way when mail call comes and I get to ATR.
Anyway, a nice thing is that my $500 C-1500 went a round with a Audi Q4. It won and the insurance doesn't think it's a crapy 500 buck truck, so a nice payout to me lol. Oh, and somebody gave me three Enfields, he was just going to turn them in. Sometimes the stars just aligned. Let's hope it stays that way when mail call comes and I get to ATR.
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