Sons of Liberty Gun Works Blaster Guts AR-15 Lower Parts Kit with Liberty Fighting Trigger

1 Review

In Stock

Standard orders will ship out in 1 business day (M-F) if ordered by 3:30 pm CST. FFL orders will ship within 5 business days or less as long as we have the information for the transfer destination. NFA items will take longer to ship and are dependent upon ATF processing times.

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The Sons of Liberty Gun Works AR-15 lower parts kit comes with almost everything you need to finish building your lower receiver. This complete lower parts kit includes the Liberty Fighting trigger to help you finish your high-quality build. Every component in this kit is made to exceed Mil-Spec to ensure ultimate reliability in your AR. The SOLGW bolt catch and spring are cast from AISI 8620 per USGI TDP while the KNS Precision Machine safety and takedown pivot detents are made from hardened stainless steel. Even the magazine release is made from steel as opposed to the commonly used aluminum. High quality materials are what set this LPK apart from the rest. This lower parts kit is a great way to finish that lower receiver on your workbench and eventually your full rifle.

This LPK Includes:
  • Liberty Fighting trigger
  • Safety Selector 
  • KNS Stainless Selector Detent
  • Safety Selector Spring
  • Magazine Catch
  • Magazine Catch Button
  • Magazine Catch Spring
  • Bolt Catch
  • Bolt Catch Buffer
  • Bolt Catch Spring
  • Bolt Catch Buffer
  • Takedown and Pivot Pins
  • Takedown/Pivot Pin Springs (2)
  • Takedown/Pivot Pin KNS Stainless Detents (2)
  • Buffer Retainer Pin
  • Buffer Retainer Spring

The Sons of Liberty Gun Works Fighting Trigger was built to strike the perfect balance between reliable Mil-Spec triggers with the smooth and consistent break of aftermarket AR-15 triggers. The Liberty Fighting trigger averages at 6 pounds and features a Nickel PTFE coating to reduce friction and maintain lubricity. With the included slave pin, this two-piece trigger is easy to install in your lower receiver. The trigger and hammer pin diameters are Mil-Spec .154” for maximum compatibility with most AR-15 rifles. This fire control group comes with everything you need to install it into your rifle and be shooting at the range in the same day. If you are looking to upgrade your AR without breaking the bank, check out the ultra-reliable Liberty Fighting trigger.

Sons of Liberty Gun Works is a custom rifle manufacturer in the United States that specializes on the AR-15 platform. They began producing purpose-built weapons for law enforcement and civilians alike and are given a lot of praise for focusing on the details that make an AR reliable. Function over form is what their rifles are known for and they are guaranteed to get the job done. From full rifles to individual parts, you can’t go wrong with SOLGW.
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BrandSons of Liberty Gun Works
California Prop 65 warning

 WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to

Ratings & Reviews

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5 starts for a basic builders kit.

by -

Got a stripped lower laying around? This is the perfect kit for it. She's a plain jane lower parts kit with everything you need to get your next build up and running. The liberty fighting trigger isn't bad at all, and for the price it can't be beat. Does it include all the bells and whistles? Nope! But it gives you the perfect base to build off of. I went with this parts kit because I have a love for SOLGW and I know that the products they produce are solid. Mike the owner is a pretty cool guy too.

Overall, one of the best basic builder kits out there. The trigger is actually not half bad, and you will get your stripped lower ready for the range. 5 stars.