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Luth-AR .223 Bull Rifle Kit Minus Lower Receiver w/ Collapsible Stock Up to 12% Off w/ Free Shipping — 4 models

Luth-AR Bull Rifle Kit Minus Lower Receiver w/ Collapsible Stock, .223, 26in, 16in, Bull, Carbine, 1x9, 1/2x28, Picatinny, KeyMod, A2, Anodized, Manganese Phosphate, Silver/ Black, RKB-16-3
Luth-AR Bull Rifle Kit Minus Lower Receiver w/ Collapsible Stock, .223, 29in, 20in, Bull, Rifle, 1x9, 1/2x28, Picatinny, KeyMod, A2, Anodized, Manganese Phosphate, Silver/ Black, RKB-20-3
Luth-AR Bull Rifle Kit Minus Lower Receiver w/ Collapsible Stock, .223, 27in, 18in, Bull, Rifle, 1x9, 1/2x28, Picatinny, KeyMod, A2, Anodized, Manganese Phosphate, Silver/ Black, RKB-18-3
Luth-AR Bull Rifle Kit Minus Lower Receiver w/ Collapsible Stock, .223, 31in, 24in, Bull, Rifle, 1x9, 1/2x28, Picatinny, KeyMod, A2, Anodized, Manganese Phosphate, Silver/ Black, RKB-24-3
Luth-AR Bull Rifle Kit Minus Lower Receiver w/ Collapsible Stock, .223, 26in, 16in, Bull, Carbine, 1x9, 1/2x28, Picatinny, KeyMod, A2, Anodized, Manganese Phosphate, Silver/ Black, RKB-16-3
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Luth-AR Bull Rifle Kit Minus Lower Receiver w/ Collapsible Stock, .223, 26in, 16in, Bull, Carbine, 1x9, 1/2x28, Picatinny, KeyMod, A2, Anodized, Manganese Phosphate, Silver/ Black, RKB-16-3
Luth-AR Bull Rifle Kit Minus Lower Receiver w/ Collapsible Stock, .223, 29in, 20in, Bull, Rifle, 1x9, 1/2x28, Picatinny, KeyMod, A2, Anodized, Manganese Phosphate, Silver/ Black, RKB-20-3
2 of 4 images
Luth-AR Bull Rifle Kit Minus Lower Receiver w/ Collapsible Stock, .223, 29in, 20in, Bull, Rifle, 1x9, 1/2x28, Picatinny, KeyMod, A2, Anodized, Manganese Phosphate, Silver/ Black, RKB-20-3
Luth-AR Bull Rifle Kit Minus Lower Receiver w/ Collapsible Stock, .223, 27in, 18in, Bull, Rifle, 1x9, 1/2x28, Picatinny, KeyMod, A2, Anodized, Manganese Phosphate, Silver/ Black, RKB-18-3
3 of 4 images
Luth-AR Bull Rifle Kit Minus Lower Receiver w/ Collapsible Stock, .223, 27in, 18in, Bull, Rifle, 1x9, 1/2x28, Picatinny, KeyMod, A2, Anodized, Manganese Phosphate, Silver/ Black, RKB-18-3
Luth-AR Bull Rifle Kit Minus Lower Receiver w/ Collapsible Stock, .223, 31in, 24in, Bull, Rifle, 1x9, 1/2x28, Picatinny, KeyMod, A2, Anodized, Manganese Phosphate, Silver/ Black, RKB-24-3
4 of 4 images
Luth-AR Bull Rifle Kit Minus Lower Receiver w/ Collapsible Stock, .223, 31in, 24in, Bull, Rifle, 1x9, 1/2x28, Picatinny, KeyMod, A2, Anodized, Manganese Phosphate, Silver/ Black, RKB-24-3

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Questions & Answers
Does this kit include the bolt carrier group and charging handle? Expert Answer

Yes, the Luth-AR .223 Bull Rifle Kit Minus Lower Receiver comes with a BCG and charging handle.

by Hunter, Gear Expert, May 17, 2022
Is this kit, when properly assembled, capable of Sub-2/3MOA groups? Expert Answer

The Luth-AR .223 Bull Rifle Kit Minus Lower Receiver could potential shoot sub MOA groups when properly assembled but that also depends on a handful of other factors when shooting.

by Hunter, Gear Expert, February 17, 2022
View All Q&A You Have a Question? Ask!
Customer Reviews
Most Recent Reviews nice unit! by Luas, July 4, 2025
Good starter for the money! Very well built and packaged nicely. Add a lower and some optics & away you go
Most Recent Reviews Fun build and all the parts you need in one box (Except the stripped lower receiver) by gene, Verified Owner, October 29, 2023
The Luth-AR .223 Bull Rifle Kit Minus Lower Receiver w/ Collapsible Stock was my first attempt to build an AR from ground up and it was well worth the money... I gained experience without having to figure out just what parts I needed to build one... ...
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Read All 2 Reviews
4 Models Available
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Product Info for Luth-AR .223 Bull Rifle Kit Minus Lower Receiver w/ Collapsible Stock

This kit contains everything you need to build your own AR except the stripped lower receiver.image

Specifications for Luth-AR .223 Bull Rifle Kit Minus Lower Receiver w/ Collapsible Stock:

Manufacturer: Luth-AR
Caliber: .223 Remington
Barrel Profile: Bull
Barrel Twist Rate: 1-9
Number of Sling Points: 2
Threads per Inch: 1/2x28
Handguard Type: Free-Float
Length: 36 - in
Muzzle Device: A2 Flash Hider
Color: Silver, Black
Gun Model: AR-15
Condition: New
Fabric/Material: 416 Stainless Steel
Buffer Tube Size: Commercial or MIL-Spec
Handguard Length: 15 in
Handguard Style: Round Rail
Gun Rail: KeyMod
Gun Type: Rifle
Gun Make: AR Platform
Additional Features: Will need GT-CUP
Included Accessories: Lower Parts Kit, Stock Assembly Kit
Barrel Material: 416R Stainless Steel
Bolt Carrier Group Included: MIL-SPEC
Charging Handle Included: MIL-SPEC
Magazine Included: No

Features of Luth-AR AR-15 Complete Fluted Bull Barrel Kit w/ Collapsible Stock

  • .223 Rem Fluted Bull Barrel
  • 416 SS
  • Threaded Barrel - Thread Pitch 1/2 x 28
  • Gas Block Diameter .936
  • Gas Tube Length - Carbine
  • 1-9 RH Barrel Twist
  • 6 Lands and Groves
  • M4 Feed Ramp
  • Button Broached

Package Contents:

  • Luth-AR .223 Bull Rifle Kit Minus Lower Receiver w/ Collapsible Stock
  • .223 Rem Fluted Bull Barrel Upper with 15in Keymod Palm Handguard.
  • Buttstock Assembly (Black).
  • Complete Lower Parts Kit.

Luth-AR .223 Bull Rifle Kit Minus Lower Receiver w/ Collapsible Stock Orderable Models

List of Orderable Models

Luth-AR Bull Rifle Kit Minus Lower Receiver w/ Collapsible Stock, .223, 26in, 16in, Bull, Carbine, 1x9, 1/2x28, Picatinny, KeyMod, A2, Anodized, Manganese Phosphate, Silver/Black, RKB-16-3 , MPN: RKB-16-3 , UPC: 812058030461 , Code: 3FN-UFH-AR15C16223C-RKB-16-3
Luth-AR Bull Rifle Kit Minus Lower Receiver w/ Collapsible Stock, .223, 29in, 20in, Bull, Rifle, 1x9, 1/2x28, Picatinny, KeyMod, A2 Flash Hider, Anodized, Manganese Phosphate, Silver/ Black, RKB-20-3 , MPN: RKB-20-3 , UPC: 812058030508 , Code: 3FN-UFH-AR15C16223C-RKB-20-3
Luth-AR Bull Rifle Kit Minus Lower Receiver w/ Collapsible Stock, .223, 27in, 18in, Bull, Rifle, 1x9, 1/2x28, Picatinny, KeyMod, A2 Flash Hider, Anodized, Manganese Phosphate, Silver/ Black, RKB-18-3 , MPN: RKB-18-3 , UPC: 812058030485 , Code: 3FN-UFH-AR15C16223C-RKB-18-3
Luth-AR Bull Rifle Kit Minus Lower Receiver w/ Collapsible Stock, .223, 31in, 24in, Bull, Rifle, 1x9, 1/2x28, Picatinny, KeyMod, A2 Flash Hider, Anodized, Manganese Phosphate, Silver/ Black, RKB-24-3 , MPN: RKB-24-3 , UPC: 812058030522 , Code: 3FN-UFH-AR15C16223C-RKB-24-3
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