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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. P

    Geissele Super Duty DDC Stripped Upper Receiver

      1. For Sale
    • $200
    • Lake Elsinore
    • Other
    Geissele Super Duty DDC Stripped Upper Receiver. $200. Willing to ship at buyers expense
  2. Duneblaster

    AR-Stoner Dust Cover Kit

      1. For Sale
    • $10
    • Roseburg
    • Oregon
    New in the Package
  3. O

    Aero Precision AR15 Complete Upper, 16" 5.56 Carbine Barrel w/ Pinned FSB, M4 Handguard

      1. For Sale
    • $500
    • Mount Vernon
    • Washington
    Up for grabs is a brand new complete upper receiver made by Aero Precision. Comes with a new in box charging handle and a 5.56 nitride BCG. Upper part number- APAR505621 $500 Will ship on buyers dime. Let me know if you have any questions.
  4. ORfisherguyx

    SPFs..Colt A-2 upper receiver assembly

      1. For Sale
    • $200
    • Oregon City
    • Oregon
    SPFs... Another one from my parts clear-out.. I purchased a couple of LE upper receivers at a local shop to do some builds. Stripped the parts I wanted than put the rest in my parts box. This is a complete Colt A-2 upper assembly (minus anything barrel related). M4 feedramps, A-2 sight...
  5. H

    Colt Upper Receiver NIW New Cage Coded Square Forge

      1. For Sale
    • $180
    • Everett
    • Washington
    Colt new in package M4 Flat Top AR upper receiver, Never Opened, Current Production, White T Marks, Square Forge Casting Mark with Dot Laser Cage Code, M4 Feed Ramps, Colt part number is 63528 (SP63528), includes forward assist and ejection cover. Never opened so only flaws on it will be from...
  6. kwilson

    Harrington & Richardson M16A1 stripped upper, never used.

      1. For Sale
    • $120
    • Beavercreek
    • Oregon
    Harrington & Richardson retro M16A1 stripped upper receiver, grey, brand new, never used. We can meet in Clackamas county or I'll ship if you pay shipping costs. Venmo preferred but cash is accepted. No trades.
  7. K

    Aero enhanced m5 upper receiver Kodiak brown

      1. For Sale
    • $80
    • Milwaukie
    • Oregon
    Enhanced aero m5 upper receiver blem. Cost was $135 willing to let it go for $80.
  8. V

    SB braces, AR10 upper receiver, PA EFAB 7.62

      1. For Sale
    • $80
    • Portland
    • Oregon
    SOLD 2x SBA3 braces, don't remember if knock off or not. 1 fde/1 black - $30 each or $50 for both. SPF Unknown brand/pattern AR10 stripped upper receiver, I believe I rattle canned this but did a good job. - $40 (price reflects gamble) SPF 5/8x24 Precision Armament 7.62 EFAB muzzle device -...
  9. P

    Stripped A2 upper receiver

      1. For Sale
    • $120
    • Beaverton
    • Oregon
    For sale is a stripped A2 upper receiver made by Thunder Tactical. Never ended up using it, so it's still new. Comes with a Luth AR A2 rear sight assembly, not yet installed. $120 for all of it, FTF in Beaverton preferred.
  10. trukinbear

    What AR lowers have upper receiver tension set screw?

    Following my most recent AR build in which I was fortunate enough to use a Ballistic Advantage lower, I discovered the wonders of the nylon tipped upper receiver tension set screw - wow! I love this! I looked and none of my other lowers are so equipped, nor even tapped for one. I understand that...
  11. P

    Stripped A2 upper receiver

      1. For Sale
    • $120
    • Beaverton
    • Oregon
    For sale is a stripped A2 upper receiver made by Thunder Tactical. Never ended up using it, so it's still new. Comes with a Luth AR A2 rear sight assembly, not yet installed. $120 for all of it, FTF in Beaverton preferred.
  12. jmenne

    *PENDING* 16" .300 BLK upper receiver

      1. For Sale
      2. For Trade
    • $250
    • Sheridan
    • Oregon
    Got about 40-50 rounds through this. Includes BCG and charging handle. I believe it's made by TLH Tactical, but I'm not positive. Ideally I'd like to trade for a 10-10.5" 5.56 upper with BCG & CH. Also willing to include a SIG Romeo 7 if interested.
  13. Zoolander

    Aero AR10 M5 stripped upper receiver

      1. For Sale
    • $100
    • Lake Oswego
    • Oregon
    New in box. I've had it long enough to realize I'm never going to build it.
  14. trukinbear

    BCM Thermal Fit AR Upper Receiver $49

    https://bravocompanyusa.com/bcm-upper-receiver-m4-flat-top-m4-feedramps-complete-unassembled-demo-scratched/
  15. RobMa

    - SOLD - BCM Thermal fit stripped upper receiver - SOLD -

      1. For Sale
    • $79
    • Seattle
    • Washington
    Sorry, this item has sold BCM Thermal fit stripped upper receiver (last one) Was sprayed with barricade and wiped down with the very same type of white towel (thus the lint in the pictures) $79 shipped Please IM me for any questions Cross-posted on ARFCOM I take PayPal friends and family...
  16. D

    Remington r4 upper receiver (sold)

      1. For Sale
    • $175
    • Boise
    • Idaho
    Remington r4 upper,
  17. Jadeon

    BCM MK2 BFH 16" Mid Length Complete AR-15 Upper Receiver- Like new

      1. For Sale
    • $650
    • Yamhill
    • Oregon
    Hello, Selling a; •BCM MK2 16" factory complete upper. With BCM bcg and large ambi charging handle. Like new, no wear, scratches, skuffs or dings. https://bravocompanyusa.com/bcm-mk2-bfh-16-mid-length-upper-receiver-group-w-mcmr-15-handguard/ *New these are selling $1015.14 with a free BCM...
  18. BrandonM92

    Aero Precision M5 upper receiver

      1. For Sale
    • $100
    • McMinnville
    • Oregon
    Brand new,Paid $159 and looking to sell for $100
  19. ChrisWolf

    11.5 inch Noveske Barrel AR-15 Upper Receiver Group

      1. For Sale
      2. For Trade
    • $650
    • Hillsboro
    • Oregon
    FSOT TV 1000 Noveske 11.5 inch mid length gas barrel Rearden Flash hider(plan B) Radian Raptor Knights Armament URX-4 BCG Never fired GBRS Group Riser not included Trades considered Tan EOTECH EXPS 3-0 recent manufacture, Aimpoint T-2, PA PLX-c 1-8(FDE/TAN), Holosun 509T green dot
  20. B_Cannon

    Noveske Gen 3 Upper Receiver and Handguard

      1. For Sale
      2. For Trade
    • $690
    • Eugene
    • Oregon
    Noveske Gen 3 upper receiver and Noveske Gen 3 15" NSR mlok handguard. Comes with barrel nut, screws, and anti rotation pin. Also included, but optional, are Forward Controls Design forward assist, and port door (dimpled LDFA and dimpled EPC). Wanting a MARS-H so I'll trade towards components...
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