A2 Style Lower Build Kit For AR-15

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Black Rifle Depot's A2 Lower Build kit for AR 15 and variant rifles includes everything you need to finish your lower receiver into a complete and functional firearm. The A2 Lower build gives your custom build the retro M16 look with A2 style stock kit from Trinity Force and OEM A2 pistol grip.

Kit Includes:

  • Includes Complete Trinity Force Mil spec Stock & Buffer Kit
  • Includes Complete Mil Spec Lower Pars Kit (OEM)
  • Lifetime Warranty

Extra Information


12 Reviews

  • Posted by DML on Sep 10th 2019


    Great fit, easy install

    Everything necessary to build a stripped lower, some grit in the trigger but thats not unexpected with this price point. It does what I want it to do.

  • Posted by Trevor on Aug 5th 2019



    Great product great quality 10/10 would recommend

  • Posted by Vurtice Albright on Jul 29th 2019


    A2 lower parts kit

    Everything looked great. When installed, worked perfectly.

  • Posted by Tommy T. on Jul 1st 2019


    A2 Stock Kit

    Good kit for the money, the lower parts kits was in colored bags which made it nice. would buy again.

  • Posted by Ivan on May 2nd 2019


    My honest Review

    Received the parts very nicely. The Stock kit were in a sealed bag and the lower part kits were in another sealed bag.

    Butt stock: It is black and feels solid. The ruber butt plate feels Ok, door compartment is plastic as well. The compartment area is large but it doesn't have the foam inside. The back screw are not flat like mil-spec stocks.

    Tube & extension: Feels solid.

    Recoil Spring and Buffer: Recoil Spring is a thinner profile, not as thick as a standard Rifle length rifle and is slightly longer. Buffer has a slightly different profile than standard Buffer as well as the weight I felt less weight than the standard Buffer. What I think is that these are not Mil-spec or every manufacturer has different machinery and ways to make things.

    Lower part kits: Some of the parts might be cast and the finish is black paint or nitrite finish. They are really black and doesn't match a lets say PSA lower finish.

    The good is that these have lifetime warranty from Trinity.

  • Posted by Jake loehr on Apr 27th 2019


    Lower parts kit

    well to start the stock was decent everything fit snug with the stock. The lower parts kit though...... could be better. The safety selector is sloppy with a lot of play in between safe and fire the trigger pull is outrageously stiff the take down pins are extremely hard to get out the Buffer spring does not have enough force to close all the way after charging. Kit doesn’t come with the front take down pin tool so setting the spring and detent are a huge pain in the ass. Over all I’d say the stock is decent quality for price but the lower parts kit.... I’ll just go ahead and pitch that

  • Posted by Jamie on Apr 8th 2019


    A2 stock and parts set

    Best a2 parts set I've ever purchased great fit and finish.best price anywhere I could find totally happy with purchase

  • Posted by Al Bellflower on Apr 5th 2019


    Nice kit and price

    This is a good quality kit by Trinity Force including a well made buttstock and priced right

  • Posted by Erik Ehnert on Mar 31st 2019


    worth the money

    Fast shipping, quality parts.