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upper receiver

In firearms terminology, the firearm receiver or firearm frame is the part of a firearm which integrates other components by providing housing for internal action components such as the hammer, bolt or breechblock, firing pin, extractor and trigger mechanism, and has threaded interfaces for attaching ("receiving") external components such as the barrel, stock, grip and mounts of telescopic sights. The receiver is often made of forged, machined, or stamped steel or aluminium; in addition to these traditional materials, modern science and engineering have introduced polymers and sintered metal powders to receiver construction.

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Recent contents
  1. O

    ALL NEW....Colt FN KAC assembled 14-1/2" URG upper receiver group

      1. For Sale
    • $999
    • Tumwater
    • Washington
    Here's a brand new, unfired Upper Receiver Group (URG) clone, assembled with the best of parts as listed below. * 14-1/2" Colt M4, CMP marked, heavy Socom barrel * FN-Square marked M4 upper receiver * Daniel Defense M4A1 Rail Interface System II, RIS II (FDE) * "C" marked bolt carrier w/ "MPC"...
  2. J

    Q Honey Badger upper receiver

      1. For Sale
    • $600
    • Eugene
    • Oregon
    6" barrel in 300 blackout, adjustable gas block, radian charging handle. Very nice upper. Suppressor not included. $600 no trades
  3. eldbillbo

    A2 Upper Receiver with Rear Sight, forward assist and dust cover assembly

      1. For Sale
    • $200
    • Oregon City
    • Oregon
    Cardinal Forge I don't recall the brand it looks new CLICK TO SEE =1&c[content]=thread&c[nodes][0]=4&c[users]=eldbillbo&o=date']all my classifieds CLICK TO SEE Trades Wanted
  4. jupiterjones82

    A2 upper receiver

      1. Want to Buy
    • Beaverton
    • Oregon
    Looking for a completed A2 upper receiver, prefer a reputable company. Not looking to spend 800 bucks. Looking to do a CAR15 blood diamond build.
  5. ljfh001

    AR Parts - Barrels, Triggers, Charging Handle, Upper Receiver and more

      1. For Sale
    • $0
    • Seattle
    • Washington
    I've got the following for sale: LaRue Tactical MBT-2S Trigger $95 Only installed and dry fired. Comes in original packaging AR15 mil-spec Trigger $25 Almost new <10 Rounds AR15 Mil-spec Charging Handle $25 Brand New AR10 Trybe Charging Handle $20 Used. Looks slightly bent, but works...
  6. S

    Lage MAX-10/31 Upper Receiver

      1. For Sale
    • $1000
    • springfield
    • Oregon
    Lage MAX-10/31 Upper Receiver for MAC 10 in 45 acp swap this out for 9mm ALL NFA Laws apply. $1000 https://www.max-11.com/529.php for reference can include drums for extra negotiated price
  7. Wavehog

    308 Upper build no BCG or CH

      1. For Sale
    • $450
    • Sandy
    • Oregon
    Decided to go a different direction. A completed 308 upper without the charging handle and bolt carrier group. This build features a green Aero Precision upper, stainless ELD 20” match barrel and a JP Enterprise signature XXL hand guard. I do not recall what brand of 3 port muzzle break, but its...
  8. drewp

    $240 Mac 10 9mm upper receiver

      1. For Sale
    • $240
    • forest grove
    • Oregon
    bought this with intent to build my own lower receiver that would use an ar15 trigger and ether colt or suomi mags. I don't know much about it. what you see is what you get. $240
  9. DRAGO71

    HK MR556 A1 Made in Germany HK MR 556 Upper Receiver ( Hard to Find )

      1. For Sale
    • $345
    • Damascus
    • Oregon
    Heckler & Koch HK MR556 Upper Receiver Made in Germany Factory HK MR556 A1 upper receiver. Compatible With: HK MR556 HK MR223 HK CR223 HK416 HK M27
  10. OverCookedRock

    16in PSA Upper w/ Optic, Aftermarket Handguard, magpul rail grips and AR parts package

      1. For Sale
    • $275
    • Bethany/Portland
    • Oregon
    Hello, for sale is a 16in upper with the following to be sold all together. May seperate optic only Firefield rapidstrike 1-6x lpvo (super clear and easy to use, read reviews and you won't find many bad ones) it simply has hockey tape on it for LARP aesthetics 🫠 PSA Stealth Upper Receiver Magpul...
  11. C

    SOLGW SAGE DYNAMICS 12.5 COMPLETE UPPER

      1. For Sale
    • $1000
    • Happy Valley
    • Oregon
    Unfired Sons of Liberty Gunworks Sage Dynamics 12.5” complete upper receiver caliber 5.56 solgw bolt carrier group and charging handle deadair keymo muzzle device Asking: $1,000.00 complete $850.00 without bcg and charging handle No trades and no shipping. Thanks.
  12. jseppa01

    (As new) Colt 6920 M4 Carbine 5.56mm NATO 16.1in Matte Black - Complete Upper Receiver Only

      1. For Sale
    • $450
    • Vancouver
    • Washington
    Comes with Complete upper receiver only (lower sold separately). With 60x .223 rounds (loose) and sling https://www.sportsmans.com/shooting-gear-gun-supplies/modern-sporting-rifles/colt-6920-m4-carbine-556mm-nato-161in-matte-black-semi-automatic-modern-sporting-rifle-301-rounds/p/1663887 Used...
  13. armjimen

    Oregon Rifleworks Complete Billet Receiver Set

      1. For Sale
    • $315
    • Hillsboro
    • Oregon
    Complete Oregon Rifleworks billet reciever set in black for sale. This is in excellent condition, Oregon-made and sells for $449. https://oregonrifleworks.com/shop/black-receiver-set/ Specs: Billet Machined 7075 – T6 Aluminum Construction Integrated Trigger Guard Flared Magazine Well...
  14. matthew124

    Palmetto state armory 5.56 ar-15 upper receiver with sig saur LPVO

      1. For Sale
      2. For Trade
    • $600
    • Tigard
    • Oregon
    Palmetto state armory upper receiver wit custom compensator and sig saur scope
  15. ArmaLiteRifleB

    VLTOR MUR upper receiver brand new

      1. For Sale
    • $150
    • Oregon city
    • Oregon
    V seven upper receiver brand new
  16. LE80

    BCM BFH 16" Mid Length Complete Upper Receiver MCMR-15 Handguard

      1. For Sale
    • $675
    • VANCOUVER
    • Washington
    BCM BFH 16" Mid Length Complete Upper Receiver w/ MCMR-15 Handguard complete $675 Without Bolt Carrier Group $500
  17. ljfh001

    New Aero Upper Receiver

      1. For Sale
    • $100
    • Seattle
    • Washington
    Aero Assembled Upper - Brand New In Box - 100
  18. M

    Mueller Dog Bone Upper Receiver

      1. For Sale
    • $95
    • Olympia
    • Washington
    Used Mueller forge upper with M4/Dog Bone markings above gas tube. Machined T marks. Some wear from use/handling. Has forward assist and port door. Price is shipped. Will only ship. PayPal friends and family / Zelle preferred.
  19. 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...
  20. Tacompton173

    11.5 5.56 URGI (ish) Upper Receiver

      1. For Sale
      2. For Trade
    • $375
    • Sumner
    • Washington
    Old BCM Upper Receiver 11.3" 5.56 Ballistic Advantage Barrel (.625" GBJ) with cross-pinned gas block Aero Precision Melonite Gas Tube CMT 10.5" DRT MLOK Handguard Advanced Armament Corp AAC 51T Brakeout Muzzle Device Hand-stop Included No BCG or CH included Barrel has less than 300 rounds...
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