BKF AR15 Enhanced Lower Build Kit W/ SBA3 Brace

(13 customer reviews)

$199.99 $129.99

223 in stock


This product is 100% made in the USA! All components are quality Mil-Spec parts for completing your AR15 lower receiver. Trust in BKF for a smooth hassle free build.

ELG stands for ‘Enhanced Longitudinal Grind’. Our new lower parts kits have set the standard when it comes to out-of-the-box mil-spec performance.  At the heart of this kit stands the longitudinally-ground trigger, which is ground in-line with the direction of pull along the long axis of the trigger, and then finish-polished. This grind and polish provide two significant advantages over standard mil-spec kits: 

  • A smoother pull with reduced grittiness

  • An enhanced basis for performing a trigger job


  • ‘ELG’ Fire Control Group (Trigger, Hammer, Disconnector)
  • Mil-Spec magazine release
  • Mil-Spec spring kit
    • Hammer Spring
    • Trigger Spring
    • Disconnector Spring
    • Pivot Pin Spring
    • Takedown Pin Spring
    • Buffer Retainer Spring
    • Selector Spring
    • Bolt Catch Spring
    • Magazine Catch Spring
  • Mil-Spec Selector
  • Mil-Spec Bolt Catch
  • Mil-Spec Small Parts Kit
    • Takedown Pin
    • Takedown Pin Detent
    • Pivot Pin
    • Pivot Pin Detent
    • Trigger Pin
    • Hammer Pin
    • Selector Pin
    • Bolt Catch Roll Pin
    • Bolt Catch Buffer
    • Buffer Retainer
  • Mil-Spec Grip Kit
    • A2 Grip
    • Hex-head screw
    • Lock washer
  • Mil-Spec Metal Trigger Guard Kit
    • Trigger Guard
    • Trigger Guard Roll Pin

AR15 SB Tactical SBA3 Pistol Stabilizing Brace W/ Mil Spec Buffer Tube Assembly – Black


  • AR15 SB Tactical SBA3 Pistol Stabilizing Brace – Black
  • BKF Mil Spec Buffer Tube
  • KAK Industries AR15 Mil-Spec Carbine Buffer
  • KAK Industries AR15 Carbine Buffer Spring Mil Spec
  • BKF AR15 Receiver Extension End Plate – Mil Spec
  • BKF AR15 Receiver Extension Lock Nut Mil Spec
Does not include Manufacture Packaging 

Additional information

Weight 1 lbs
Dimensions 8 × 4 × 4 in




Product Type




13 reviews for BKF AR15 Enhanced Lower Build Kit W/ SBA3 Brace

  1. Andrew (verified owner)

    Quality Parts

  2. gerard (verified owner)

    Perfect, just what I needed to finish my lower. 🇺🇸🇺🇸🇺🇸

  3. Tyler Robinson (verified owner)

    Awesome service.

  4. Chad Stevenson (verified owner)

    quick service combined with the product as promised

  5. Odaliz B V. (verified owner)

    Exactly what I expected…perfect…

  6. Devon (verified owner)

    You guys ROCK! Buys again in two weeks.

  7. Christian (verified owner)

    Everything included to finish a lower, cant ask for much else

  8. Barry (verified owner)

    excellent price for this set up fast shipping

  9. Brenda C. (verified owner)

    Excellent product and service!

  10. Keith O. (verified owner)

    Hands down best price and quality,thanks BKF

  11. Michael (verified owner)

    Awesome service and delivery speed! I will definitely be shopping here again.

  12. Gilles M. (verified owner)

    The best price anywhere!

  13. Anonymous (verified owner)

    Great deal!

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