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BKF M4 Carbine Buffer Tube Assembly – Mil Spec

(208 customer reviews)

Original price was: $33.28.Current price is: $26.62.

498 in stock

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Description

All components are quality Mil-Spec parts for completing your AR15 lower receiver.

Includes:

  • BKF T6 6061 U-cut Anti-Rotation Mil-Spec buffer tube (6 Position)
  • BKF 3 oz carbine buffer
  • BKF Carbine buffer spring
  • BKF Steel end plate
  • BKF Steel castle nut

PRODUCT SKU: BKF-CBA-6061

Additional information

Weight .5 lbs
Dimensions 10 × 2 × 2 in

208 reviews for BKF M4 Carbine Buffer Tube Assembly – Mil Spec

  1. Paul Erickson

    Quality parts by Aero. Another flawless transaction with bkingsfirearms

  2. James Heagy (verified owner)

    My order shipped very fast and was packaged well. The product works great. I will use BKF in the future. Thanks.

  3. Erik Sutherly (verified owner)

    Great product

  4. Richard (verified owner)

    Good quality and a great price

  5. Dustin (verified owner)

    Great quality buffer kit, all Aero Precision parts, bought two of these on sale to finish off a couple lowers and they went together perfectly. Would buy again. B Kings is also my new go to for AR builds. Great prices, great shipping times, and veteran owned.

  6. John England (verified owner)

    Good product at a super price.

  7. Chris Kwiatkowski (verified owner)

    Great

  8. Keaton (verified owner)

    Awesome product

  9. Matthew M. (verified owner)

    Is it Aero or is it BKF? I can’t tell the difference…….

  10. Andrew (verified owner)

    Have not installed yet but seems nice.

  11. Dustin (verified owner)

    An excellent and inexpensive kit for a build or spare parts.

  12. Joseph G. (verified owner)

    Fit finish and function were perfect! Keep up the good work guys!

  13. Robert Galperson (verified owner)

    Great Price, great quality, fast shipping, great customer service!

  14. Todd R. (verified owner)

    Good solid basic parts at a great price. Will definitely use this vendor again.

  15. Dennis (verified owner)

    Fast shipping and product as described

  16. Anonymous (verified owner)

    Excellent assembly combo at a great price. Fast shipping and great service, too.

  17. Dallas (verified owner)

    I love your company and the way you do business. Will definitely use you in the future

  18. John E. (verified owner)

    Good quality kit for the money.

  19. Travis (verified owner)

    Exactly as advertised

  20. Joshua (verified owner)

    Fit and finish are excellent, shipped super fast.

  21. Michael T. (verified owner)

    Great Parts! No Problems, will buy again for my next Build!

  22. Anonymous (verified owner)

    Great quality. The tube has a nice finish that matches me aero receivers perfectly

  23. Lane T. (verified owner)

    Great buffer assembly, love the light weight.

  24. Anonymous (verified owner)

  25. christopher (verified owner)

    Good to go

  26. Mason M. (verified owner)

    Great

  27. Clay D. (verified owner)

    Best price around, most others charged the same or more for just the buffer tube alone. Shipping very reasonable unlike most places these days, and shipped fast. Thank you

  28. sean (verified owner)

    Does what it says on the box. At time of purchase it was the best price online for a 6061 tube complete kit.

  29. brad c. (verified owner)

  30. Anonymous (verified owner)

  31. mad_mongolian7734 (verified owner)

    Quality and affordable. Would happily buy again for next carbine build.

  32. Michael B. (verified owner)

    Came fast, and fit perfectly, great product

  33. Alex S. (verified owner)

  34. Thomas M. (verified owner)

    Top quality, fast shipping will buy from again!

  35. Joshua Provost (verified owner)

    I got several of these when they first came out and they were nice and cheap for what you got. The only real downfall they have is the retainer for the detent is the style that is supposed to go around the sides of the detent but if you screw it in far enough to do that the upper won’t go on because the top of the buffer tube sticks through the lower. So you’re stuck with just 2 very small contact points on the edges of the detent or shaving metal off your new buffer tube. I’m not in the military or a police officer so it’s not a huge concern to me as the rifles they went on will be primarily for range shooting.

  36. Joshua Meyer (verified owner)

  37. Derrick M. (verified owner)

    Works just like it should

  38. Andrew D. (verified owner)

  39. Thomas (verified owner)

  40. Jon G. (verified owner)

    Just what I wanted. Can’t beat the price.

  41. Tyler H. (verified owner)

  42. Mike P. (verified owner)

  43. Barry M. (verified owner)

  44. Kirklyn (verified owner)

    Got here on time looks perfect thank you!

  45. Bradley Hunt (verified owner)

    Great kit, great price, flawless operation.

  46. Anonymous (verified owner)

  47. Robert Weber (verified owner)

  48. Robert C. (verified owner)

    Outstanding service and quality

  49. Anonymous (verified owner)

    Functions flawlessly, threads are tight felt confident when I cranked it down with a wrench it wasn’t going anywhere.

  50. durand henderson (verified owner)

    Well packaged. Fit perfect. Excellent pricing.

  51. Timothy Brady (verified owner)

    Excellent service!!!!

  52. Mark R. (verified owner)

    Good quality parts at less money than the competition, and he doesn’t take 6 weeks to ship. Plus he’s a bet? No brainer for me.

  53. Daryl Lacourse (verified owner)

  54. Sharon A. (verified owner)

    Excellent quality and finish.

  55. Sean P. (verified owner)

  56. Keith B. (verified owner)

    Good parts fast service

  57. Patrick N. (verified owner)

    When everything is sold out everywhere I came to B King for the parts I needed, not only were they in stock but the prices were not inflated, great product good price & fast shipping.

  58. Paul (verified owner)

    100% as advertised

  59. William M. (verified owner)

    Great Product at an affordable price!

  60. Steven (verified owner)

    Came in a timely fashion.

  61. Ronald K. (verified owner)

    Product EXACTLY as described.
    As always from B. King prompt shipping at reasonable prices for quality products. B. King’s service actually makes working on my own weapons enjoyable since the parts I order are so prompt.

  62. Anonymous (verified owner)

    I will always order here. Shipping is fast and the price is just right. Keep it up!

  63. James (verified owner)

    Product was as advertised and was delivered promptly.

  64. George D. (verified owner)

    The buffer itself was high quality. The buffer tube is a nice matte color. Really good kit overall.

  65. Keith O. (verified owner)

    Everything looks to be well made. The main reasons I selected this buffer tube were because of the price on the whole assembly, and the fact that the tube had the forward flange which extends over the buffer retainer. I have had a retainer come out in the past and put an end to a shot string as it lodged in the fire control group. The spring being coated is a bit of a negative, but that’s my personal preference.

  66. John Turner (verified owner)

  67. Brian Richards (verified owner)

  68. John Golden (verified owner)

  69. Jack Watts (verified owner)

    Really like shopping with you all always good prices and prompt shipping, Thanks until I visit again

  70. Anonymous (verified owner)

    Great product

  71. Joe kennedy (verified owner)

    It was great! Perfect fit and great service. Will be back for more.

  72. david c. (verified owner)

    The AR15 buffer assembly was easy to install and the gun ran perfectly

  73. gerald yabeny (verified owner)

    Excellent price and quality

  74. Anonymous (verified owner)

  75. Mike S. (verified owner)

    Great price fast shipping product worked perfect

  76. Jeffrey MIller (verified owner)

    Product is exactly as expected. The USPS sucks. Way to long to get the merchandise(not your fault). Thank you.

  77. William A. (verified owner)

    Bare bones, no frills kit that just works for a great price. Fast shipping with all things considered during this crazy times. Glad I found this company, as I will be a repeat customer.

  78. Randall (verified owner)

    part quality was as expected, shipping was slow

  79. Eric Kisch (verified owner)

  80. Dustin C. (verified owner)

  81. Bradley (verified owner)

    Great product, great price, fast shipping

  82. GUY LETOURNEAU (verified owner)

    Nicr

  83. Anonymous (verified owner)

    Very nice, thank you

  84. Jason (verified owner)

    Cut out for detent was a little shallow making it difficult to complete final turn of buffer tube into place over detent. But i got it done.

  85. Peter (verified owner)

  86. Fred Schneider (verified owner)

  87. Kenneth A. (verified owner)

    Great quality and fast service

  88. Josh T. (verified owner)

    Great service… Funny thing is I didn’t realise where B kings was located. I’m in MN. I was born and raised in Lima OH. Small world!

  89. Wesley Pinkston (verified owner)

  90. Rich L. (verified owner)

    In stock and good quick service thanks!

  91. Michael J. (verified owner)

  92. mark.a.horsley (verified owner)

    Used buffer tubes on PSA lower receiver builds. Fit and functioned perfectly. Excellent quality.

  93. Anthony (verified owner)

    Nice quality

  94. Anonymous (verified owner)

  95. JOHN B. (verified owner)

    Great part great for great price

  96. CLAYTON (verified owner)

  97. Nicholas (verified owner)

    great product, awesome price, fast shipping

  98. Roger Ramey (verified owner)

    Excellent parts for the AR 15 carbine. Everything fit perfectly. The shipping was very fast.Great to do business with.

  99. Andy S. (verified owner)

  100. Anonymous (verified owner)

    Excellent quality,excellent price!

  101. Don H. (verified owner)

    Fast shipping, great price, excellent product!

  102. Daniel S. (verified owner)

    Great price and everything works properly. That said, if I remember correctly, there was something a little different about the buffer retainer cutout. Typically, I over thread the extension slightly, insert and capture the take down detent pin and spring. Then I rotate the extension back to the correct position and slip the end plate down. There was something about the cutout that prohibited that method. Not the end of the world just a bit of a PITA getting the detent spring properly captured without kinking it.

  103. Anonymous (verified owner)

    Best prices, extremely fast shipping. Thanks again

  104. jaime c. (verified owner)

    Great product, and great shipping.

  105. Benjamin B. (verified owner)

    Product as described. Went together no problem. Fast shipping. Great company! Will order from them again in the future!

  106. paul friend (verified owner)

    okay-

  107. Andrew N. (verified owner)

  108. Robert wylie (verified owner)

  109. Chris V. (verified owner)

    I built three lowers using these kits, two pistols and one rifle, all chambered in 7.62×39, the shipping was fast, I would recommend this assembly for anyone looking to build.

  110. Peter M. (verified owner)

  111. Dan Wilder (verified owner)

  112. Brian P. (verified owner)

  113. Philip Truman (verified owner)

    Everything is working properly great place for accessories!

  114. kenneth (verified owner)

  115. robert t. (verified owner)

  116. Barry M. (verified owner)

  117. Brian B. (verified owner)

    exactly what I needed at a great price

  118. Rick T Errhalt (verified owner)

    The first product that I ordered was not the correct product at all, and was damaged on top of that. Reached out to the company for a replacement, but am still waiting on said replacement to ship as of the writing of this review. For the amount of wasted time with this company I would have rather spent $10 more dollars somewhere else. Even had to pay to get packaging to send the original product back.

  119. Paul F. (verified owner)

    Very positive and quick delivery

  120. Ray S. (verified owner)

  121. Michael Horner (verified owner)

    Thank you for the fast shipping.

  122. David Kissee (verified owner)

    What I needed

  123. Jesse Cobb (verified owner)

    Everything as described well packed and no cosmetic issues fast shipping

  124. Kevin Thomas (verified owner)

    Awesome product and shipping time !!! Super Cat speed fast !!!

  125. Garrett K. (verified owner)

    Went on smooth and did the thing. Enhanced tube is pretty nifty.

    Stake your castle nuts, you heathens.

  126. Anonymous (verified owner)

  127. STEVEN A. (verified owner)

    Really impressed with the quality and price of this tube assembly and shipping was very fast. Will recommend BKF to my friends.

  128. Raul H. (verified owner)

    Install was easy and perfect fit

  129. Ray B. (verified owner)

  130. Autumn (verified owner)

  131. Anonymous (verified owner)

    Really inexpensive price. Parts looked good and fit good. Havent shot the rifle these parts are on but they were the cheapest around so i gave them a try.

  132. Kenneth R. (verified owner)

  133. Anonymous (verified owner)

  134. Steven W. (verified owner)

    Outstanding quality for the price.

  135. JACK H. (verified owner)

    Great deal and fast delivery only place I order at parts

  136. Michael Casertano (verified owner)

  137. Matthew Sclafani (verified owner)

    parts and customer service was fantastic!

  138. Tony T. (verified owner)

    Everything has an excellent fit & finish and it all came super fast! I can’t say enough about them & I will certainly be back for more!

  139. Kenneth Rabidou (verified owner)

  140. Michael (verified owner)

  141. Darius (verified owner)

  142. Lorenzo Garza (verified owner)

    Good basic parts for backup and repairs

  143. Jeff Williams (verified owner)

    Great product great prices

  144. Donald T. (verified owner)

  145. Anonymous (verified owner)

    Works great

  146. Cameron Dinger (verified owner)

  147. Rob (verified owner)

  148. Michael (verified owner)

    Great budget buffer kit. I’ll probably never tell the difference between 6061 and 7075.

  149. Anonymous (verified owner)

  150. Justin (verified owner)

  151. Scott (verified owner)

  152. Roy V. (verified owner)

  153. Kevin M. (verified owner)

  154. Michael Frazier (verified owner)

  155. Adam Griffin (verified owner)

  156. David V. (verified owner)

    Good parts for the price! Went on my PSA lower with no issue.

  157. LETITIA S. (verified owner)

    Exactly as described; Great.

  158. Anonymous (verified owner)

  159. Chris Clark (verified owner)

    Buffer tube was smooth and solid. Buffer spring is good quality nice and stiff everything went together smooth

  160. Thomas Hand (verified owner)

  161. Tim P. (verified owner)

    USA, enhanced, anti-tilt, complete kit. You can try to find a better deal, but then the shipping was fast too. Great deal. Haven’t used it yet, but not a bit worried. Excited. Thanks.

  162. Benjamin L. (verified owner)

    Standard receiver extension for carbines. I like that the front of the buffer tube has a lip that meshes with the buffer tube spring/retainer. There is no question as to whether the tube is far enough into the lower receiver.

  163. Anonymous (verified owner)

  164. Stephen (verified owner)

    Great product for my application shipped fast Thank you

  165. Chris Clark (verified owner)

    Good quality definitely buy this for all builds

  166. Anonymous (verified owner)

    Great selection

  167. Anthony P. (verified owner)

  168. Scott L. (verified owner)

  169. Michael (verified owner)

    I was skeptical because of the price but, this is a quality buffer tube kit. I haven’t fired my build yet, because I need to get the muzzle device pinned and welded but, I have assembled the lower and installing this part went flawlessly. Shipping, fast and it was packed well and, arrived in perfect condition.

  170. Scott (verified owner)

  171. Malcolm (verified owner)

  172. Mark (verified owner)

    Good shipping and products

  173. Charles Edgar (verified owner)

  174. John S. (verified owner)

    Great parts at great prices

  175. Brandon (verified owner)

  176. James High (verified owner)

  177. Anonymous (verified owner)

  178. Jesus Arellano Anguiano (verified owner)

  179. Carlos P. (verified owner)

    Great quality stock extension at awesome price

  180. Rickardo G. (verified owner)

  181. Dean (verified owner)

  182. Douglas Reed (verified owner)

  183. Richard Wilson (verified owner)

    A great quality buffer assembly. I’ve used dozens of these and never experienced a problem.

  184. Davy Keith (verified owner)

    Good quality. I recommend.

  185. Anonymous (verified owner)

    Nice kit good price

  186. Steven P. (verified owner)

    Good price great product

  187. Kyle (verified owner)

  188. Lance (verified owner)

    Great fit for the price!

  189. George Bevis (verified owner)

  190. Mike (verified owner)

  191. Neil (verified owner)

    These guys are the REAL DEAL. Commitment to excellence and service and quality of components absolutely define them.

  192. Michael Parker (verified owner)

  193. Christopher M. (verified owner)

  194. Derek Vander Meer (verified owner)

    I will always buy from this company, great products, good prices and veteran owned

  195. Curtis Mattingly (verified owner)

    Awesome !!

  196. Gordon Milliron (verified owner)

    Easy to navigate website and fast delivery! Would definitely order again.

  197. John (verified owner)

  198. Douglas Reed (verified owner)

  199. William Henderson (verified owner)

  200. Kevin (verified owner)

  201. William (verified owner)

    Everything looks great! Excellent deal and great shipping.

  202. William (verified owner)

  203. Joseph (verified owner)

    This tube worked perfectly on a PSA lower.

  204. Jason M. (verified owner)

    Very good quality recoil system the price was the best on the web and shipping time was fast I had it in my hands In 3 days. I’ll definitely do more business with BKF in the future. Thanks again. Jason Mc……

  205. Adam (verified owner)

    No complaints or issues. Have not used it yet.

  206. David A. (verified owner)

  207. Michael (verified owner)

    Nice set works well very good quality and it’s a super price.

  208. Ricky N. (verified owner)

    See the comment above

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