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barreled upper

Used in mechanical watches and clocks, a barrel is a cylindrical metal box closed by a cover, with a ring of gear teeth around it, containing a spiral spring called the mainspring, which provides power to run the timepiece. The barrel turns on an arbor (axle). The spring is hooked to the barrel at its outer end and to the arbor at its inner end. The barrel teeth engage the first pinion of the wheel train of the watch, usually the center wheel. Barrels rotate slowly: for a watch mainspring barrel, the rate is usually one rotation every 8 hours. This construction allows the mainspring to be wound (by turning the arbour) without interrupting the tension of the spring driving the timepiece.

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Recent contents
  1. B

    Upper with CMT Tano Rail and 12.5 Geissele Barrel

      1. For Sale
    • $625
    • Saint Helens
    • Oregon
    Brand new upper build. Decided to go a different direction. BCM Upper CMT Tano 11.5" Rail Geissele 12.5" CHF Chrome Lined Barrel Asking $625
  2. gribb

    16 Stainless Steel Barreled Upper. Aero, BA, BCM - $500

      1. For Sale
    • $500
    • Portland
    • Oregon
    Upper has: - Milspec Aero Upper - 16” .223 Wylde Ballistic Advantage Hanson profile 416R Stainless Steel barrel - BCM MCMR 15” Mlok handguard with a mlok rail section and QD adapter - Aero Gastube 0 rounds through chamber, professionally assembled.
  3. Gunbuggy

    18 Inch Barreled Upper - Ballistic Advantage Premium Black SS - SPR

      1. For Sale
      2. For Trade
    • $210
    • Amboy
    • Washington
    Barrel: 18" 223 WYLDE SPR STAINLESS STEEL RIFLE LENGTH AR 15 BARREL W/ OPS 12, PREMIUM BLACK SERIES This 223 Wylde chambered 18-inch barrel is machined from 416R Stainless Steel with a QPQ finish. Our Premium Black Series Barrels feature a Nickel Boron Coated Extended M4 Feed Ramp Extension. Has...
  4. aljames

    10.5" 5.56 PSA barreled upper with Wilson FH and Magpul handguards

      1. For Sale
    • $165
    • Merlin
    • Oregon
    I had this put together with an optic, buis and bcg and mounted on a lower which all came off without a bunch of marks. There is evidenence of charging handle in catch. It was never fired so I'm calling it new. Comes with the Wilson FH and mlok magpul handguards as shown. $165 shipped where...
  5. aljames

    PSA 10.5" barreled upper with MBUS, Romeo5 optic, Wilson FH, magpul handguards NO BCG

      1. For Sale
    • $300
    • Grants Pass
    • Oregon
    I'm taking apart this build. Factory built PSA pistol/SBR upper with a 10.5" Barrel which is melonited with 1-7" twist. NO BCG/CH included or lower included, just the upper with magpul handguards, MBUS rear sight, Romeo5 red dot and Wilson flash hider. This is new unfired but obviously has...
  6. arakboss

    Done  Del-Ton AR15 Heavy Barrel, Barreled Upper $155 Shipped.

    It's $229 with BCG & CH. $155 w/o them. https://www.del-ton.com/ProductDetails.asp?ProductCode=DT1007
  7. arakboss

    Done  PSA Barreled Upper $150 plus shipping.

    Gun stuffs are getting cheaper. Mid length rifle kits will be $250, before you know it. Bad times to sell but good times to buy. This will double as a crate opener with it's poor barrel profile...
  8. arakboss

    Done  DTT 45acp 16" Barreled Upper Kit (no bolt). $145 plus shipping.

    https://www.deltateamtactical.com/rainforest-reaper-45-acp-rifle-upper-build-kit.html? Try code save5now to save 5% If you don't already have a 45acp bolt, pick up this complete pistol upper and you can use the bolt & ch from it in both uppers...
  9. Stoner

    Colt 6721/Daniel Defense 16" HBAR AR15 Barreled Upper

      1. For Sale
    • $250
    • Portland
    • Oregon
    Colt/DD barreled upper receiver up for sale. Barrel is a take off from a Colt 6721 paired with a DD upper. Both the Colt 16" HBAR barrel assembly and DD upper are great condition. As is, no BCG or CH included. $250 local pick up in Portland or surrounding area Will ship for additional $25...
  10. Stoner

    Colt 6721/Daniel Defense 16" AR15 HBAR Barreled Upper

      1. For Sale
    • $250
    • Portland
    • Oregon
    Colt/DD barreled upper receiver up for sale. Barrel is a take off from a Colt 6721 paired with a DD upper. Both the Colt 16" HBAR barrel assembly and DD upper are great condition. As is, no BCG or CH included. $250 local pick up in Portland and surrounding areas Will ship for additional $25...
  11. ChrisWolf

    Lantac Barreled Upper Reciever 14.5

      1. For Sale
      2. For Trade
    • $550
    • Hillsboro
    • Oregon
    14.5 Pin and Welded silencerco ASR Comp, Lantac Barrel BCM MLOK handguard on a Cross machine and tool Upper Reciever. BCG and Charging handle not included but can be negotiated. SLR Rifleworks Ti adjustable gas block. Upper only 550.00. (700TV) BCG 275.00 (300TV) CH 50(100TV) March Shorty 1-10...
  12. MichaelH

    Done  Aero Barreled Uppers w Atlas Handguards On Sale at BKing Firearms all less than $340.00

    Quality parts for a budget price if building a decent 5.56/.223 AR. Here is the 16" model. https://bkingsfirearms.com/shop/complete-upper-receivers/bkf-15-16-5-56-nato-complete-upper-receiver-w-atlas-r-one-handguard/ Here is the entire sale page for Aero Uppers...
  13. jdb98

    Assembled AR15 Upper

      1. For Sale
    • $450
    • Camas
    • Washington
    -Less than 1000 rounds fired. Parts list: -OD green cerekote Aero precision upper receiver -BCM mcmr hand gaurd. -14.5 inch criterion core barrel -Forget the brand, but stainless gas tube, and low profile gas block. This was professionally assembled by limitless America in washougal. No...
  14. MichaelH

    SPT - 16 Aero Precision M4e1 Enhanced barreled upper with Quantum handguard 5.56/.223

      1. For Sale
      2. For Trade
    • $275
    • Portland
    • Oregon
    Areo Precision enhanced upper (Aero handguards bolt to the receiver not a barrel nut) 15" Quantum mlock handguard 16" nitride 5.56 barrel w/ mid length gas system. A2 flash hider. No carrier/ bolt or charging handle. Maybe 500 to 700 rounds through it. A ding here or there from being used are...
  15. MichaelH

    Aero Enhanced M4e1 16" Barreled Upper, mid-length gas, w/15" Quantum Handguard

      1. For Sale
    • $350
    • Portland
    • Oregon
    What the title says. Handguard is larger diameter and good for large hands. Handguard discontinued by Aero, but can be swapped for other Aero handguards that fit enhanced uppers. Purchased lightly used from another member who claimed less than 500 rounds through, and I've probably only put...
  16. MichaelH

    WTB EPC 9 barreled upper in 8.3” or 11”

      1. Want to Buy
    • Portland
    • Oregon
    This is probably a long shot, but here goes: Looking for a gently used EPC 9 complete upper, with the updated/newer feed cone. Bolt, and charging handle not desired and muzzle device optional. Want black, not FDE. I ordered an 11.5 barrel to build one , but it seems like someone might have one...
  17. Paolung

    Radical barreled upper <$200 TODAY ONLY

    Limit 2, 24 hour sale underway.
  18. V4Cascade

    4.75" Barreled Upper

      1. For Sale
    • $200
    • Gresham
    • Oregon
    Never got to actually shoot it. Everything is brand new except for the gas block and tube. This was built as my hiking/backpack gun but found something better. It is rattle can. $200. Open to trades. -4.75" KAK barrel (5.56) -KAK Linear Blast Device -PSA Upper Receiver -PSA 7" MLOK Rail
  19. arakboss

    KM Tactical Barreled Upper Deals.

    $120 https://kmtactical.net/product/flash-sale-16-7-62x39-entry-ar-15-upper/ Add a bcg/ch for an extra $60.
  20. sed

    Precision Defense™ AR-15 Barreled Upper Receiver - 16" - $150

    Great deal on a complete upper (minus BCG/CH). I bought this last year at $180 and thought that was a great deal. For 8/20/2023 (24hrs only) it's at $150!! Rosco barrel alone sells near that price! Rosco barrel isn't advertised as part of the kit, but has been the heart of the upper since they...
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