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  1. Need some help with ar15 upper....

    Sorry for the lack of responses on this thread, I personally have not had time yet with the holidays to test it out again. The reason another upper was built was to keep the wear and tear on the original Colt SP1 in the best condition. The SP1 was only factory fired, and I wanted to keep it...

  2. Need some help with ar15 upper....

    Yeah! I will definitely try to get up that way. Thanks for offering up the help! Also, thanks for the heads up on the BUIS. I will move it rearward back to the free float.

  3. Need some help with ar15 upper....

    Gas tube was installed into the gas block by a gunsmith at a local gun store. Roll pin is nice and tight. I Inspected the block port alignment with the tube before installing into the barrel.

  4. Need some help with ar15 upper....

    Sorry for the lack of details. I just don't know how much is too much, and what is vs isn't helpful info. Thanks for the help and suggestions though. I did post some pictures.

  5. Need some help with ar15 upper....

    Dwell time looks to be about just over 2.25". Barrel length is 10.5. Sorry for the confusion before with the 11.5"post. Barrel is a 5.56 nato barrel. Problem with .223 PMC Bronze ammo, issues with x193 (any brand) seems to work alright, but still not 100% reliable. Variety of mags used. Surplus...

  6. Need some help with ar15 upper....

    Sorry for the confusion in the thread. It is a 10.5" barrel. The distance from the gas port to the muzzle was an estimate, not an exact. I was responding and did not have my rifle with me, so it was a guess. The faxon barrel previously mentioned is on a different build. The barrel is dimpled...

  7. Need some help with ar15 upper....

    I will see if i can get a picture posted soon of the gas block and port.

  8. Need some help with ar15 upper....

    I was just estimating. Sorry for the lack of exact measurement

  9. Need some help with ar15 upper....

    I will change barrels then. Any Suggestions? Maybe go .223 Wydle? Or just stick with a 5.56x45?

  10. Need some help with ar15 upper....

    Works fine with 14.5" and 16". But its prefers when i run a heavier H2 buffer instead of the H1. Where as the 10.5" won't even cycle with H1 or H2, and runs...ish.. reliably with a carbine standard weight of 3.0 oz. with Lake City X193 5.56

  11. Need some help with ar15 upper....

    Would doing a short stroke piston conversion system help? Looking at replacing the gas system with an Adam Arms Piston conversion.

  12. Need some help with ar15 upper....

    Sorry Guys, the barrel is: AR-Stoner Barrel AR-15 Pistol 5.56x45mm NATO Medium Contour 1 in 7" Twist 10.5" Chrome Moly Melonite- Purchased from Midway. From what I see these are made by Liberty/Satern

  13. Need some help with ar15 upper....

    Who made the barrel (and other components)?- Barrel Faxon Firearms, gas Block Midwest Industries, gas tube is generic, upper made by X-Products, Bolt/BCG ,ade by Aero Precision How did you check gas block alignment? (95%+ this is the problem) -> is the barrel dimpled? - Bottom of barrel is...

  14. Need some help with ar15 upper....

  15. Need some help with ar15 upper....

    Sorry, here are some answers to other questions: Upper is made by X-Products Barrel is made by Faxon Firearms Gas block made by Midwest Industries Gas tube- Un-known maker Nickel boron Bolt/BCG- Made by Areo Precision.

  16. Need some help with ar15 upper....

    Hey Guys, thanks for all the responses! Here's what I've done: -Cleaned gas port and checked Gas block alignment -checked port for obstructions -swapped out buffer spring for a lighter spring, and used a carbine weighted buffer. ----got the same results. -Swapped to x193 ammo, and started to...

  17. Need some help with ar15 upper....

    Pics added. Thanks to everyone for your help! Got a question for you experts. Having an issue with my FA. Getting short stroke issues. Running a 11.5" upper, with carbine length gas tube. Having issues with 55 grain .223. -Failure to lock back after last round, -Will pick up next round, but...
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