Description
This is our standard AR-15 Mil-Spec carbine buffer tube/receiver extension castle nut coated by H&M nitride
Features:
- 4140 Tool Steel construction
- Nitride finish
- Fits: AR-15 or LR308 Buffer Tubes
PRODUCT SKU: BKF-CN-N
Save $1.04
Current price is: $4.16.
15% OFF In Cart!!!
BKF AR15 Receiver Extension Castle Nut – Nitride
Original price was: $5.20.$4.16
or 4 interest-free1 payments of with 
1865 in stock
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James Stanley (verified owner) –
Anonymous (verified owner) –
JOSE P. (verified owner) –
Great quality and fast shipping
Steven W. (verified owner) –
Joseph G (verified owner) –
Nice finish, great threads, good staking notches. BKings is the best.
Christopher Dobek (verified owner) –
Wayne H. (verified owner) –
Bob Otley (verified owner) –
James Dodson (verified owner) –
Tom J. (verified owner) –
Priced right
Bobby M. (verified owner) –
Champagne quality at beer price!
Tom J. (verified owner) –
Parts priced right
Cody H. (verified owner) –
Great fit and finish
William Schulz (verified owner) –
Jordan M. (verified owner) –
Tom Spaulding (verified owner) –
Ethan aldridge (verified owner) –
Robert L. (verified owner) –
Just what I needed at a great price.
Tom J. (verified owner) –
Parts priced right
Guy Letourneau (verified owner) –
Thanks
Richard Gower (verified owner) –
Greg (verified owner) –
Anonymous (verified owner) –
Worked perfect to complete buffer kit
Charles Stallings (verified owner) –
Rob (verified owner) –
Gaylon B. (verified owner) –
Jamie Harrison (verified owner) –
Josiah (verified owner) –
Good Quality for good prices. This is my new Favorite company to order from
Joel D. (verified owner) –
Clean threads and good finish.
RONALD (verified owner) –
Curtis Winnie (verified owner) –
black nitride only $1.72 you cant find a better deal
Ken (verified owner) –
fit and finish were great. Was the only thing keeping me from finishing my build. Works great and looks good.
Anonymous (verified owner) –
Dennis bills (verified owner) –
Nice.
Dane S. (verified owner) –
Scot N. (verified owner) –
Works as it shouls
Victor S. (verified owner) –
Purchased as spare parts
Tom J. (verified owner) –
Quality parts at a fair price
Mark (verified owner) –
Wesley Terry (verified owner) –
Anonymous (verified owner) –
Anonymous (verified owner) –
Anonymous (verified owner) –
Anonymous (verified owner) –
Rollin (verified owner) –
Worked great
David (verified owner) –
David Smith (verified owner) –
James H. (verified owner) –
My new and only go to place.
Danilo C. (verified owner) –
Chad (verified owner) –
Fit like it should. Excellent price.
Richard (verified owner) –
Wesley (verified owner) –
charles watson (verified owner) –
Robert S. (verified owner) –
Nathaniel M. (verified owner) –
Great price
Jefferey P. (verified owner) –
Wesley Terry (verified owner) –
David S. (verified owner) –
Duane P. (verified owner) –
Kevin R. (verified owner) –
Aaron Starnes (verified owner) –
Tyson Phalen (verified owner) –
Anonymous (verified owner) –
Jaime (verified owner) –
Stephen Morgan (verified owner) –
mathew vieira (verified owner) –
Anonymous (verified owner) –
Solid part
Arthur (verified owner) –
Picked the Buffer tube up from BKF for a 9MM PCC build with a fixed Magpul Stock and folding knuckle, Turned out Bass Ace and shoots even better along with the castle Nut from them excellent to do business with. Will be back.
Don (verified owner) –
Neil (verified owner) –
Kenneth (verified owner) –
Works all right it’s pretty loose and sloppy on the tube I bought. Most usually are .Once tightened down you don’t think about it anymore.
David (verified owner) –
Seth Houghton (verified owner) –
Randy R. (verified owner) –
Kodi Y. (verified owner) –
Matthew K. (verified owner) –
Keith D. (verified owner) –
Adam S. (verified owner) –
Robey Todd Walters (verified owner) –
James Dodson (verified owner) –
good and great price
Jordan West (verified owner) –
Julio C. (verified owner) –
Solid castle nut nice nitride
Rollin (verified owner) –
Exactly what I needed
Enrico Francesco (verified owner) –
Works perfect, great price
Ronald S. (verified owner) –
Kiel (verified owner) –
Anonymous (verified owner) –
Robert M. (verified owner) –
Low price, high quality.
Darrell (verified owner) –
Daniel O. (verified owner) –
Trying to stock up on parts as I prepare for our state to become California North.
r3widealley (verified owner) –
This is the place for parts. A good, professional outfit. Quick shipping, excellent CS. All parts are good quality and nicely packaged in resealable bags. Stock up!
robert kohler (verified owner) –
Adrian F. (verified owner) –
Randy R. (verified owner) –
Good quality at a good price. Shipped promptly!
Jonathyn J. (verified owner) –
Good quality
Matthew B. (verified owner) –
Needed random parts for a new build, B. King’s is always a solid choice.
Chris (verified owner) –
Anonymous (verified owner) –
Harry L. (verified owner) –
As described and best pricing!
Josh H. (verified owner) –
Eric G. (verified owner) –
Verified Buyer (verified owner) –
A well made nitrided castle nut.
damian07251999 (verified owner) –
I’m impressed. Great quality and price.
Lance Shively (verified owner) –
Excellent Quality, Great Price I do not think it can be Beat!
Scott R. (verified owner) –
Few dollars less than other sites i ve shopped. Builds can get expensive quick its nice to cut some cost without cutting quality
Damian Clark (verified owner) –
Top notch
Christopher Dickerson (verified owner) –
Anonymous (verified owner) –