JE4 AR-15 Lower Build Kit

JE4 AR-15 Lower Build Kit

(102 customer reviews)

Save 31 %
MSRP: $129.95
$89.95

JE4 AR 15 Stock
1 × JE4 AR 15 Stock

In stock

Save 32%
MSRP: $43.99
$29.95
AR 15 Lower Parts Kit
1 × AR 15 Lower Parts Kit

In stock

Save 36%
MSRP: $69.95
$44.95
AR 15 Carbine Buffer Tube Kit
1 × AR 15 Carbine Buffer Tube Kit

In stock

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MSRP: $39.95
$24.95

In stock

JE4 AR-15 Lower Build Kit
JE4 AR-15 Lower Build Kit

Save 31 %
MSRP: $129.95
$89.95

SKU: BUNDLE-J4LBK Categories: ,

JE4 AR 15 Lower Build Kit

The JE4 AR 15 Lower Build Kit from Black Rifle Depot is the perfect solution for the lightweight and high-quality lower build. This kit includes a skeletonized Mil-spec stock, made in America, for a sleek and light look. The Mil-spec lower parts kit, also made in America, provides all the components needed to finish your lower build. The Mil-spec buffer tube kit, made in America, includes a 6-position aluminum receiver extension, 3 oz buffer, castle nut, end plate, and carbine spring. This kit is designed to meet the highest quality and performance standards and is backed by a limited lifetime warranty. Upgrade your AR 15 build with the JE4 AR 15 Lower Build Kit from Black Rifle Depot.

Includes

  • Skeletonized Mil-Spec Stock
  • Complete Mil-Spec Lower Parts Kit
  • Mil-Spec Buffer Tube Kit
    • 6-position 6061-T6 Aluminum Receiver Extension
    • 3 oz Buffer
    • Castle Nut & End Plate
    • Carbine Spring
Weight 27.5 oz
Dimensions 2 × 6 × 8 in
P65 Warning Message
P65 Warning Message

Compliance

NFA (National Firearms Act) compliance is crucial for legal ownership and transfer of regulated firearms and accessories like short-barreled rifles, suppressors, and certain types of ammunition, ensuring adherence to federal regulations to avoid legal penalties and ensure responsible firearm ownership.

102 reviews for JE4 AR-15 Lower Build Kit

  1. Robert H –

    Nice kit

    For the money this kit is hard to beat

  2. Raymond H. –

    Great delivery time!!

    All the parts fit extremely well and seem to be if good quality. Places my order on a friday afternoon recieved it monday morning.

  3. John S. –

    Good product

    As always the product was shipped and arrived fast… a good product at a great price

  4. Tomasz Prus –

    Lpk

    Great product for the price, fast delivery.

  5. Eric Archer –

    TRINITY FORCE OMEGA LOWER BUILD KIT 

    Very nice stock for the price lower parts kit is decent. Takedown pins are kind of mediocre; they stick very badly, but it’s probably due to my Polymer lower. Overall very pleased. Incredibly fast shipping. Would purchase again.

  6. PMan –

    Nice kit

    Nice kit. Stock is especially nice. Ive bought many lower kits and this one seemed best.

  7. Nate L. –

    Omega lower build kit

    Good stock and parts kit but order on a Monday morning, expecting I would get it the same week took them till Thursday to get it in the mail and delayed the whole process. So it’s not​ USPS fault…

  8. Chuck –

    Good value and fast shipping.

    I don’t see any trinity marking’s,The take down pin’s and detent’s are very difficult to operate.
    Every thing else seam’s to be a good value.

  9. Aaron –

    Comete lower parts kit

    Fit perfect fast shipping will definitely buy a couple more

  10. Thomas Foote –

    Review

    Love your products ..I refer everyone I can to BRD…still waiting to see if I get the 2 butt pads you all send you would send as soon a you seen if you had a couple of the laying around…I couldn’t find them on your website 2 different times ..that’s why he sent an email and said he would see if he had a couple laying around…but I love your products ..keep up the GREAT WORK…BRD ROCKS!!!

  11. Dan –

    Omega Lower Build Kit

    Good quality for price, stock was heavier than I expected. Feels like it will hold up.

  12. Christopher –

    AR 15 lower build kit

    Works well

  13. Scott –

    Omega lower build kit

    Same as the alpha, what more could you want.

  14. Ernie Willis –

    Lower parts kit

    This was my first build. For the most part everything went together effortlessly. Shopped around for a lot of parts kits and I thought this was the best deal. Everything functions as it should.

  15. Anonymous –

    Trigger

    Recomend installing selector after trigger. Rear of trigger wont simply slide under selector.

  16. Daniel –

    Lower reciever kit

    Everything I expected. Awesome

  17. Jake –

    Kit

    Very Big Bang for the buck. Will be buying more in the future

  18. Cory –

    Everything fit

    So far I haven’t fired a round, but everything went together great. Everything was there and had no issues putting it together.

  19. Roy Wasson –

    Great

    Great kit!!

  20. Richard Hoffman –

    OMEGA LOWER BUILD KIT FOR AR-15

    These components went together great. I polished the mating surfaces of the trigger and hammer and lubed them with never siege and the results were a very smooth trigger pull.

  21. Dan –

    Nice everything works

    Installed nicely and works great so far

  22. Roy Wasson –

    Great

    Really solid kit

  23. Armand Aguirre –

    great items and shipping

    Got exactly what i asked for. One thing to note is that you do indeed get the rubber padding on the stock (should be in the picture, but you get it anyway). Shipping was incredibly fast (and cheap, 5 bucks) and all items present. Thanks! couldn’t ask for more!

  24. Clint slope –

    LPK

    California to pa. 2 days. WOO HOO

  25. James Samson –

    LPK

    Very nicely done! California to PA in 2 days. Woo Hoo!

  26. JP –

    Omega Lower Build Kit

    Nicely done BRD. Nice touch with the hand written “Thank you JP” on the in package receipt. Will purchase again.

  27. Mike –

    Stock doesn't slide very easily

    The stock is too tight on the buffer tube so it doesn’t slide very easily. It also weighs 3-4 times more than the basic mil-spec stock.

  28. Heath –

    Nice kit

    This was my first build. It went together easily and shoots great! I haven’t shot it too much but look forward to shooting it as often as I can!

  29. John –

    Great

    Very well make parts very happy

  30. Michael E –

    OMEGA LOWER BUILD KIT FOR AR-15

    Great price and everything worked perfect with Anderson Lowers. Went OEM on the lower kit and it was just as expected. Stock fit perfect on the Buffer tube and seemed to the same quality as MagPul. Will be ordering again in the future. Shipping by the way was super fast. Ordered Thursday evening, received Saturday CA to OH. Thanks a bunch!

  31. Todd –

    Lower parts kit

    All standard parts for a great price. Would gladly purchase again when the time comes

  32. Ernest Gurley –

    Will definately purchase again. All the parts worked perfectly

    A great lower parts kit

  33. James TerHark –

    Lower Build kit AR15

    Delivered on time. Great price. Quality parts.

  34. Nick –

    Lower parts kit

    Great kit, everything fit well. I really like these trinity force Stocks.

  35. Justin Pennington –

    Quality parts, fast shipping!

    Everything was in separate bags, all parts fit as they should. It’s a nice complete kit !

  36. Cory L White –

    Worth the money

    Great stock and grip Picked the apoc parts set

  37. Jonathan Musser –

    Great fit for my Anderson

    Great fit for my Anderson lower, all the parts fit great and it runs like a dream!

  38. Mitchell Rees –

    OMEGA lower kit

    Extremely satisfied with the quality and functionality of this kit. All parts joined with ease. Would recommend this kit to anyone who wants to build their own lower. Great price and fast shipping!

  39. AR Bud –

    Will definately purchase againin. All the parts worked perfectly

    My 3rd lower parts kit by OMEGA. Every part fit perfectly!

  40. Ryan Blaine –

    Lower build kit

    Quality through and through .
    Worth and extra 10 bucks over milspec…good gear

  41. Donald Cimino –

    Awesome kit

    This is one of my favorite kits, everything fits great looks great and the price is very good too!!

  42. Donald Cimino –

    Build kit

    Everything works great, I like the stock more than a traditional ar stock and the price is low. All in all its a good deal!

  43. Doug –

    JE4 AR 15 LOWER BUILD KIT

    Everything went good really easy just had trouble with the butt stock and the tube had a very hard time getting into together

  44. Tony –

    Your average kit.

    The stock itself leaves a lot to be desired. It sticks to the buffer tube and has a clumsy way of retracting. Other than that it’s your basic lower build kit.

  45. Brian S Bacon –

    Lower kit

    Was complete and good quality, only issue was speed of delivery.

  46. David Hawkins –

    Cheap parts

    If I had realized how cheap the parts were going to be I would have ordered something else. The buttstock doesn’t function well and I had issues with the trigger assembly pins going in smoothly.

  47. Ronald Twitchell –

    Lower Build

    Used with my first ever lower build, when together east in my polymer lower. I order a second one can’t wait.

  48. josh kuester –

    Je4 ar 15 Lower Build Kit

    Cost + quality = Great! What more can I say. Amazing service!

  49. Bill –

    Lower kit

    Great. Has all parts needed to assemble

  50. Ubaldo Espinoza –

    Lower rifle kit

    Liked just need my ar15 lower

  51. Mike jones –

    Great build

    Everything fit exactly how it should have

  52. Ryan E Cooper –

    Awesome

    Love it. Everything i needed to complete my lower. And everything fit perfectly

  53. Edson J Flores –

    Je4 review

    Took a bit to arrive, but very understandable due to circumstances. Everything arrived as described individually packaged making it easy to identify parts. Was skeptical about the company due to low prices, but will be buying from them more frequently.

  54. Michael McKechnie –

    LPK

    the quality of the parts is on par with most parts kits. Had no problems with assembly. Trigger pull is average military pull around 6 lbs. The price is what makes it worth it.

  55. Daniel Barbush –

    Basic build lower kit

    All parts worked well. No problem. I would recommend this kit.

  56. Russell Kirlin –

    JE4 AR 15 lower build kit

    Kit went together with ease. Only problem i had was with the stock fit on extension tube. Had to take it apart to get it on tube. Other than that it is a great kit and buy.

  57. M in Utah –

    JE4 Lower Parts Kit

    I went with this upgraded LP Kit for the Butt Stock. I like the design. I’ve purchased a few LP Kits from BRD and all have arrived with everything included for the build. I’ll buy more later.

  58. Randolph –

    Decent

    Magazine catch doesn’t fit into any lower I have, which seems to be a common problem. Had the same issue with 2 other LPKs. Other than that, excellent kit.

  59. Kjel –

    Great build kit

    Great affordable lower build kit.

  60. Jim Burcham –

    Lowe build kit

    I purchased a lower build kit for an AR I was building, the quality of this AR build kit was very good, everything went into place on my lower and functions as it should, I have fired my first 1000 rounds through my new AR with no issues whatsoever everything appears to be working just fine as it should, the bottom line here is I would recommend this to my family and friends, and if I was doing another AR Lower build I would absolutely buy this build kit again!

  61. Dustin Herrera –

    Take down pins

    I didn’t receive any take down pins with my kit I ordered. I’m waiting to hear back. Otherwise I’m satisfied with everything, hopefully customer service is good.

  62. CECIL GIESENSCHLAG –

    good product

    good product

  63. Lee Dawson –

    Easy install

    I was kinda worried when seeing all the parts actually it was a piece of cake. Shipping was fast almost to fast and quality was 100% thanks black rifle depot will buy again in the future

  64. Donnnie Bell –

    Excellent build kit

    fast shipment this time too.

  65. Ronnie Strickland –

    Je4 ar-15 lower build kit

    Great kit, worked perfectly.

  66. Tyler Barnett –

    Review

    Phenomenal kit!!! Granted all mil spec And can’t really go wrong with mil spec but really good kit, worth every penny still breaking my rifle in but so far no issues whatsoever will definitely buy this again

  67. Ryan –

    Trigger and Buffer Tube are Subpar

    The trigger was a nightmare to install. The spring that applies tension to the disconnector made it very difficult to align the holes with the lower receiver. I think I spent about an hour trying to get it into the right position, and I had to hammer the pin in. Every other kit I have used in the past (mostly from PSA) allowed me to just slide the pin in.

    The buffer tube was not Milspec and had a strange geometry on the threading. This also made it very difficult to install the rear takedown pin detent. Just use standard parts, please.

    Other than that, it works. While it was awful to put together, it functions as a rifle.

  68. Roger Miller –

    Lower parts kit

    This was my first build for an AR platform. I purchased this lower kit because it came with the buffer tube and rear furniture. Everything went together easily and everything was high quality .I highly recommend.

  69. Mark Santos –

    Great…

    Awesome products love their company

  70. Alan Pritchard –

    Parts went together easily. However, kit missing…

    Parts went together easily. However, kit missing fire select detent. Not an issue since I have extra parts from previous builds.

  71. Michael Pare –

    Happy

    Very pleased with this product. Parts fit perfectly!

  72. David Gage –

    Good…

    I bought 2 kits to finish my AR15 lowers One for a 5.56 and the other for a 300 Blackout and they both work fine

  73. Al Innocenti –

    All parts as described happy with the…

    All parts as described happy with the quality

  74. Timothy Arnold –

    AR 15 lower build…

    Works nicely with Anderson lowers tight fit everything works fine

  75. Benjamin Burton –

    First ar15…

    Very pleased with quality. Everything fits and works as it should.

  76. James Giles –

    quick, value, and correct, you dont need any…

    i placed and order during covid/christmas, andhad it within a few days. kind of blew me away. all parts were there and boxed nice and neat. handful of awesome stickers as well!

  77. TJ –

    Fast shipping, decent…

    It is a in spec FCG and fairly standard furniture and tube.

    During the Christmas rush, election panic buying and covid they shipped it out and got it to me fast. Trigger and hammer seer surfaces are machined properly, its not a custom drop in trigger feel but it is far from bad and all parts function as they should.

    Giving 5 stars because during Covid, election panic buying and Christmas they still got it to me in a reasonable time frame, thanks for that BRD.

  78. Rick Reaser –

    Great

    Great product will buy again and again

  79. Tracy Philippi –

    Great…

    Easy fit

  80. ROBERT RICHARD –

    Complete lower parts…

    Overall is is a great value. The only complaint is the but stock is a little loose. does not fit as snug ad some others.

  81. bob joseph –

    good…

    good product

  82. MARK REDEMANN –

    Stimulus

    Good combination

  83. Lawrence stacy –

    Very good…

    Very good product

  84. Nicholas Mccloughan –

    Rifle kit missing…

    Ordered a rifle kit and it’s missing parts. 3 days and 6 emails later still no response from the company. Extremely disappointed

  85. Stephen Decatur –

    Great kit I will be buying more!

    Great kit I will be buying more!

  86. Matt Handlang –

    Great

    Great

  87. Chris Sutton –

    Fantastic

    excellent customer service, super fast processing and shipping times, these guys are great! all of my future builds will have parts from BRD

  88. James Wall –

    Happy

    Received order quickly, haven’t started build yet, everything looks good to go.

  89. Corey Price –

    Good…

    Kit was in separate colored bags for each set of parts… grip is basic… stock is pretty nice with QD points…
    Kit was received quickly… im happy with it

  90. Heath Miller –

    Lower…

    This kit is of good quality and always has everything listed

  91. Jeff Bufton –

    Lower…

    Fast ship, looks to be very good quality, thanks.

  92. Wilkd Rose Ranch –

    Nice LBK, I especially liked the butt stocks!!!

    Nice LBK, I especially liked the butt stocks!!!

  93. Francis A. –

    Very Good…

    Received my kit quickly. Assembled my whole build with no problem and tested my rifle flawlessly. Used a Spike’s Tactical lower with a PSA 5.56 upper. Will buy again for future builds.

  94. David Horn –

    Awesome parts and…

    Awesome product, very fast shipping, highly recommend these guy’s

  95. Sam –

    It is great and fit perfectly and just what I needed to finish my first ar build

    Will definitely be doing more business with black rifle depot again

  96. Sam –

    It is great and fit perfectly and just what I needed to finish my first ar build

    Will definitely be doing more business with black rifle depot again

  97. Sam –

    It worked great to complete my build

    Great price and fast shipping

  98. Larry Gullett –

    Lower parts kit

    Works just fine

  99. Kyle –

    JE4 AR 15 LOWER BUILD KIT

    Everything you need to finish your stripped lower. Wish it came with a few more springs because we all know what happens sometimes, but it is a great lower

  100. Terry Einspahr –

    Great!!!

    Thank you so much for a great product!! The only issue I had was the trigger guard. I don’t have an allen wrench that small. So it got put on the back burner till I get one!! The rest of the build was pretty easy and painless!! Thank you again.

  101. Adam Pettigrew –

    Good parts kit

    Everything was great except the je4 stock. It is very loose on the buffer tube. I will have to find something to tighten it up. I have ordered from BRD many times and I will be back.

  102. James –

    Parts kit

    Very nice kit. All tolerances were tight and clean fitment. Only issue was butt stock. It was a very loose fit and uncomfortable. Overall pleased with quality for price. Thank you. I will replace butt stock with hogue.

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