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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. 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...
  2. Paolung

    Radical barreled upper <$200 TODAY ONLY

    Limit 2, 24 hour sale underway.
  3. 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
  4. 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.
  5. 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...
  6. Tack_Ryan

    Foxtrot Mike Complete 223 Wylde Barreled Upper

      1. For Sale
    • $275
    • Lindale
    • Other
    For sale is a complete upper from Foxtrot Mike Products out of Idaho. Billet upper receiver with the handguard fitted perfectly to the upper via a locking tab. 15 inch handguard. The barrel is 16 inches chambered in 223 Wylde with a 1/8 twist, nitride finish, and pinned gas block that is taper...
  7. Tack_Ryan

    Aero Precision Wilson Combat Barreled Upper

      1. For Sale
    • $430
    • Lindale
    • Other
    Price Drop to $430 For sale is a a complete 16" upper minus BCG/Charging handle. The core of this is a match grade Wilson Combat Recon Barrel. This barrel is 16" with a 223 Wylde Chamber, 1/8 twist, extremely soft shooting Intermediate length Gas System, 416 R stainless, with fluting and armor...

  8. 24” barreled upper receiver

      1. For Sale
    • $200
    • Banks
    • Oregon
    Put together because I wanted to try out a 24” barrel. It loves 69 grain or heavier. Shot the Hornady 68 BTHP extremely well. Anyways, I’m continuing to purge so it’s an extra that I don’t need. I’ve got a couple that shoot just as nice, though with less barrel. It’s a no name barrel. I...
  9. A

    Colt LE6920 16" Upper -$325/obo

      1. For Sale
      2. For Trade
    • $325
    • bellevue
    • Washington
    · Colt LE6920 16" Upper – C marked with Colt "C MP" marked barrel . Has a low profile set screw gas block installed , 16" 1/7 twist 5.56 chrome lined barrel , asking $350->325 and will ship for extra 15/20 pending location. edit: will trade for aimpoint pro, date code 05/15
  10. AKMalcontent

    16in CHF FN Barreled upper.

      1. For Sale
    • $250
    • Silverdale
    • Washington
    WTS, 16in PSA Premium CHF FN Barreled upper. Around 3k rounds through it, it's served me well and has eaten anything I've thrown into it. Will come with an extended charging handle but no BCG is included. SOLD. Willing to ship.
  11. coolio5k

    Daniel Defense barreled upper

      1. For Sale
    • $550
    • Keizer
    • Oregon
    Thought I had a buyer but it fell through Anchor Harvey forged upper receiver - This has a little wiggle on one of my receivers. Fits tight on another. Not sure if it’s the lower or upper but either way, tension screw fixes it. Drop in Daniel Defense Omega 7.0 quad rail Troy modular VFG...

  12. -Go fast- 9mm barreled upper receiver w/o bolt (MVB Taccom3g)

      1. For Sale
      2. For Trade
    • $150
    • Banks
    • Oregon
    MVB 9mm dedicated upper and a Taccom 3g extreme feed ULW 9mm barrel with barrel nut and cleaning rod. Used for speed steel comps and due to lack of primers availability and prices I’m not shooting 9mm like I was. Upper is made for PCCs only. No gas tube port, small ejection port. More...
  13. P

    Radical Firearms 18" .223 Wylde 1:8 S.S. Rifle-Length Barreled Upper - 15" M-LOK RPR Gen3 Rail and BMD Brake 199.99 + Shipping

    https://www.primaryarms.com/radical-firearms-18in-1in8-223-wylde-complete-stainless-steel-ar15-upper-half-w-15in-rpr-m-lok-rail?trk_msg=6ER3ERH1ITPKPDO0Q0NIDFIT9K&trk_contact=Q48AC6D75NI8T97EFLQEVARJ9S&trk_sid=NMJD428B3SSE8LRK6L9O1FTQ30&trk_link=ABCB7O8FLSV4T9RTJUHB7CJ5N0&utm_source=listrak&utm_m...
  14. coolio5k

    Daniel defense barreled upper -Final price drop

      1. For Sale
    • $550
    • Keizer
    • Oregon
    Would possibly trade for another upper depending on what you’ve got Anchor Harvey forged upper receiver - This has a little wiggle on one of my receivers. Fits tight on another. Not sure if it’s the lower or upper but either way, tension screw fixes it. Drop in Daniel Defense Omega 7.0 quad...
  15. Garg

    Radical Firearms 18" .223 Wylde 1:8 S.S. Rifle-Length Barreled Upper - 15" M-LOK RPR Gen3 Rail and BMD Brake

    $199.99 each...
  16. N

    **SOLD** ARP 6.8 SPC II Barreled Upper

      1. For Sale
    • $350
    • Ravensdale
    • Washington
    Aero m4e1 enhanced upper, 15" enhanced mlok rail. Barrel is ARP 18" 3R w/ Target Crown Round count 300 Groups great with factory ammo, 120sst, 115 fusion, Xm68gd This upper was on my hunting rig, killed a few mule deer. There are a few scratches etc on the rail and barrel I'll try to capture...
  17. Asavage270

    Looking for 20" heavy barreled upper recommendations

    Hey guys, Looking for some recommendations on a 20" 5.56/.223 wylde, heavy (more heavier = more gooder) barreled upper, 4150cmv barrel, flat top, preferably a complete upper that comes threaded. not looking to break the bank for ultra quality, but I do want something that isn't trash; as this...
  18. MachineKiller

    UNFIRED Bravo Company 14.5" BFH Barreled Upper

      1. For Sale
    • $300
    • Coos Bay
    • Oregon
    READ THE ENTIRE AD. This was a factory-built BCM upper that was disassembled to be used for a custom build. Unfortunately the build didn't quite work out, so I've decided to move on. The upper is a standard (not Mk.2) upper and the barrel is a 14.5" BFH, ELW-profile with a mid-length gas...
  19. eldbillbo

    Ballistic advantage 11.5" nitride barrel $110

      1. For Sale
    • Oregon City - Tualatin
    • Oregon
    Ballistic advantage 11.5" nitride barrel less than 100 rds $110 TRADES WANTED A1, C7, M16 upper receivers, A1 barrels. 180-200 grain .300 win mag hunting ammo must be at least 2 matching boxes. No mix match. Left-handed Ar10 Lr308 parts, A2 rear sight assembly. Trijicon or Meotpa...
  20. eldbillbo

    Ar15 upper - Spikes Tactical Receiver with PSA Mid Gas pinned FSB 16" barreled Upper

      1. For Sale
    • $250
    • Oregon City
    • Oregon
    Has 50-60 rds through it and other than a couple of storage scuffs it's in excellent condition. $250 No bolt carrier group or charging handle ADD $100 for BCG and CH TRADES WANTED. Please note when offering trades please note the trade value of your items or at least say I will trade this...
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