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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. G

    PWS carbine buffer w/ ratchet system

      1. For Sale
    • $50
    • Ridgefield
    • Washington
    PWS carbine buffer tube w/ ratcheting castle nut and back plate. Lightly used, shows a little wear but still 98% + of finish on it. Paid $100 for the kit.
  2. Clinton475

    AR-15 parts, buttstock, handguard, grip, AR-10 birdcage

      1. For Sale
    • $40
    • Salem
    • Oregon
    AR-15 parts: (2) Grips (1) Mil-spec m4 carbine stock and buffer tube (1) NBS free floating m-lok handguard, 15 inch, black, no barrel nut and attachment bolts, 1 bolt hole is damaged and needs to be re-tapped (1) Charging handle, "Butthead" brand (1) AR-10 birdcage muzzle device, 5/8"x24...
  3. Tht_guy_josh

    WTB A5 BUFFER SET UP and 43x magwell

      1. Want to Buy
      2. Want to Trade For
    • salem
    • Oregon
    Looking to buy an entire set up if possible. Will definitely need a a5 tube and a3 buffer Also looking for a radian 43x magwell or sheild arms magwell And a melonite mid length gas tube
  4. Tarcos

    KAK SHOCKWAVE Blade Pistol Stabilizer Brace With Buffer Tube

      1. For Sale
      2. For Trade
    • $40
    • Milwaukie
    • Oregon
    Like New Condition What you see is what you get. The Brace & Buffer Tube It works on AR Lowers Won't Ship Price $40 I accept Cash, CashApp, Zelle, Venmo, or PayPal or Trades Trade interest ( in order most interested in to less) Brass Cased Ammo 22LR, 9MM Luger, 10MM Auto Steel Case 762x39...
  5. D

    Lower parts, Buffer tube, FCG

      1. For Sale
    • $15
    • Boise
    • Idaho
    Carbine buffer tube with spring - $15 Mil spec safety selector with detent and spring - $5 Pivot and Takedown Pins - $5 Luth Trigger Group, installed but never used, non-MiM parts, with disconnector spring- SOLD KNS anti walk gen 2 pins, black nitride, stainless steel - SOLD Take all for $25...
  6. PDXDMDGUNS

    Blade pistol brace + buffer tube

      1. For Sale
    • $45
    • Tigard
    • Oregon
    Shockwave industries blade pistol brace and included buffer tube.
  7. U

    B5 folding stock

      1. For Sale
      2. For Trade
    • $330
    • Tigard
    • Oregon
    B5 Stock Geissele tube Law tactical Gen 2 Spring and Buffer not included $330 OBO Open to trades..
  8. bbowl

    New carbine buffer tube set

      1. For Sale
    • $20
    • Aloha
    • Oregon
    Standard carbine spring Standard carbine 3.0oz buffer (+$15 for h2 4.6oz) Milspec buffer plate Castle Nut $20 picked up in aloha or $25 shipped +$15 to include milspec 6 position buffer tube I've got 3 sets left, I ship immediately.
  9. 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...
  10. 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...
  11. 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
  12. 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...
  13. 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!
  14. 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.
  15. 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...
  16. 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...
  17. 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
  18. 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...
  19. 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...
  20. 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...
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