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buffer tube

A buffer amplifier (sometimes simply called a buffer) is one that provides electrical impedance transformation from one circuit to another, with the aim of the signal source being unaffected by ("buffered from") whatever currents (or voltages, for a current buffer) that the load may produce. Two main types of buffer exist: the voltage buffer and the current buffer.

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Recent contents
  1. bbowl

    New carbine buffer tube set

      1. For Sale
    • $30
    • Aloha
    • Oregon
    Milspec 6 position buffer tube Standard carbine spring Standard carbine 3.0oz buffer 4.6oz H2 buffer is +15 Milspec buffer plate (or sling mount version +$5) Castle Nut If you need a few little parts like detents and springs etc just let me know and I'll throw in. $35 shipped or $30 picked up...
  2. BlackTemplar

    BlackTemplar's Parts Sale

      1. For Sale
    • Northport
    • Other
    All prices are shipped (I am in Alabama for school at the moment, but have done transactions from here, check my 100% positive feedback). Paypal Friends and Family only, will ship USPS tracked. Magpul BEV Block (used once to install muzzle device) $25obo Magpul Armorers Wrench (used once to...
  3. BlackTemplar

    Brand New Colt Olive Drab 4 Position Buffer Tube

      1. For Sale
    • $50
    • Northport
    • Other
    Brand new olive drab Colt 4 position tube. Matches Magpul OD perfectly. Purchased for a project that fell through. Tried to get it from a couple different angles to show the color but difficult to photograph. $50 shipped Please note that I am currently located in Tuscaloosa, Alabama for school...
  4. dbg19

    SBM4 Brace w/ SB Pistol Tube

      1. For Sale
    • $80
    • Gresham
    • Oregon
    Pistol Brace and tube $80 - SB Tactical SBM4 Brace w/ SB Tactical Pistol Buffer Tube (Light use) (Sold Pending Funds) $15 - Aero Precision Enhanced Pistol Buffer Tube (New) (sold) $5 - Tacfire AR10 / 308 Buffer Tube Spring (New) Pick-up in Gresham or SE Portland PM Interest
  5. dbg19

    New PSA Nitride BCG + Aero Pistol Buffer Tube

      1. For Sale
    • $70
    • Gresham
    • Oregon
    AR Parts - All New/unused unless mentioned $95 - Ballistic Advantage BCG, Nitride (Less than 50 rounds) SOLD $15 - Lancer 20 Round 5.56 Magazine, Black (NEW) SOLD $50 - BCM Mod 4 Charging Handle (Less than 50 rounds) SOLD $70 - Palmetto State BCG, Nitride (NEW) $15 - Aero Precision...
  6. B

    For Sale or Trade: Sylvan Arms Folding Stock or Brace Adapter

      1. For Sale
      2. For Trade
    • $150
    • Everett
    • Washington
    Sylvan Arms Folding Stock/Brace Adapter Brand new in packaging Cash (+ shipping, or meet north of Seattle area) PM me if you want to see my trade list. Thanks!
  7. NW PREPPER

    SB Tactical SBA3 Brace And Buffer Tube

      1. For Sale
    • $75
    • Rockaway Beach
    • Oregon
    Buffer tube is brand new and brace is in excellent condition. $75 Shipped.
  8. ZA_Survivalist

    BLK Gen1 Shockwave brace

      1. For Sale
      2. For Trade
    • $35
    • Hillsboro
    • Oregon
    I changed out a pistol brace of mine and so thus I have a spare brace on hand. Gen 1 shockwave brace (black) KAK dimpled tube End plate Castle Nut Also comes with a freebie but Im not sure it’ll have much use to you. Endo tactical brace adapter, Ive filed it down and drilled the adapter to...
  9. dbg19

    BCM MLOK Angled Grip & Grip Panels

      1. For Sale
      2. For Trade
    • $10
    • Gresham
    • Oregon
    BCM MLOK Angled Grip/ Grip Panels (unbranded) Aero Precision Buffer Tube w/ Aero End Plate & Aero Castle Nut KAK Industries Stealth Pistol Brace. Finger-tab adjustable w/ rear slots for QD. Grip Panels. MLOK. Rubberized. (unbranded) BCM Angled Grip. MLOK $15 for both 3 & 4 or trade both for...
  10. Abigfatdynamo

    Various AR15 parts

      1. For Sale
    • $40
    • Portland
    • Oregon
    Selling a few items all items have very little use: 1) Aero precision 556 BCG black nitride-$75 2)VG6 Epsilon 556 muzzle brake. Unused-$40 3) Radian raptor charging handle-$45 4) Armaspec SRS buffer tube spring-$40 Cash only. No trades. Lemme know
  11. OregonSig

    Ar parts bundle

      1. For Sale
    • $60
    • Eugene
    • Oregon
    Selling some extra AR parts I've accumulated. This kit doesn't quite have everything to build a lower so I am not listing it as a lower parts kit but it is close. Hopefully somebody can find some use in it. Everything pictured will come with it. It has a Magpul grip, plus 2 mil spec grips...
  12. T

    PANTHEON ARMS KENTRI 3.5N - BRAND NEW

      1. For Sale
    • $75
    • Portland
    • Oregon
    For sale is a brand new Pantheon Arms 3.5N Short Buffer System. Compatible with carriers that use a non-integrated bolt like 5.56 x 45mm, 300BLK and 7.62x39mm. CMMG Banshee 9mm radial delayed blowback BCGs are also compatible with this model. An M4/M16 BCG is recommended for reliable function...
  13. ALapping

    Gear Head Works- Tailhook+Saber Tube

      1. For Sale
      2. For Trade
    • $199
    • St. Helens
    • Oregon
    Have a great condition Gear Head Works, Saber Buffer tube, with attached Mod 1 Tail Hook brace. Tube+Tailhook only. No Spring/weight. Interested in trading the entire thing for a Sba3, Sba4, or something similar. Needs to be adjustable, with cash on your end. I don't need the buffer tube, just...
  14. smitty007

    Tango Down VFG, LBE & SB Tactical Buffer Tubes, Magpul PMAG

      1. For Sale
    • Eugene/Springfield
    • Oregon
    Willing to ship, but prices below don’t include shipping. Please let me know if you have any questions! I have some other ads and am happy to combine shipping for different items from different ads. 1. SB Tactical Buffer Tube, Mil-Spec, 6-position, New no box - $35 2. LBE Unlimited Buffer...
  15. RobMa

    Leitner-Wise Design Heavy Duty Buffer Retainer

      1. For Sale
    • $19
    • Seattle
    • Washington
    The PLW Design Heavy Duty Buffer Retainer offers a larger and stronger surface to hold the buffer in place during sustained and full automatic fire. The patent pending new Generation 2 HDBR has even more surface area contact with the buffer and the retainer is self-centering and rotation...
  16. E

    Armaspec stealth recoil spring

      1. For Sale
    • $50
    • Vancouver
    • Washington
    I purchased this from a member on here and it didn't work with my 9mm BCG, so it's back up for sale. Weight is H2/4.7oz. Previous owner claimed to have never used it. I installed it, but never ran it. Asking $50 firm. No shipping, face to face only. Located in NE Vancouver.
  17. D

    New SBA3+Buffer Tube

      1. For Sale
    • $110
    • Portland
    • Oregon
    Bought 1 too many last week and don’t want to deal with returns. Just asking for what I paid+shipping, thanks
  18. S

    Odin Works Zulu 2.0 Adjustable Stock Kit - Blue

      1. For Sale
    • $110
    • Tualatin
    • Oregon
    Odin Works Zulu 2.0 Adjustable Stock and Padded Buffer Tube with Sling Attachment End Plate Blue Used with minor cosmetic marks Asking $110
  19. eldbillbo

    Ar15 A2 Buttstock assembly New condition complete $70

      1. For Sale
    • $70
    • Oregon City
    • Oregon
    Like new never mounted no storage ware complete with buffer tube, buffer, spring and screw. Its not a colt though but comparable quality.
  20. BRDA

    Magpul MOE Rifle Stock and Receiver Extension Tube - AR-15

      1. For Sale
    • $90
    • Federal Way
    • Washington
    For sale is a lightly used Magpul MOE rifle length fixed stock in black. Comes with a Brownell’s rifle receiver extension tube ($40 value). Also, includes a Magpul Type 1 rear sling QD point add-on ($15 value).
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