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Armaspec Superlight .223/5.56mm Gun Builders Kit Up to 10% Off w/ Free Shipping — 6 models

Special offer available for this product. Click here to see!
Armaspec Superlight .223/5.56mm Gun Builders Kit, SS/Black, ARM251-BLK
Armaspec Superlight .223/5.56mm Gun Builders Kit, SS/ODGreen, ARM251-ODG
Armaspec .223/5.56 Superlight Gun Builders Kit, SS/Blue, ARM251-BLU
Armaspec Superlight .223/5.56mm Gun Builders Kit, SS/FDE, ARM251-FDE
Armaspec Superlight .223/5.56mm Gun Builders Kit, SS/Bronze, ARM251-BRZ
Armaspec Superlight .223/5.56mm Gun Builders Kit, SS/Red, ARM251-RED
Armaspec Superlight .223/5.56mm Gun Builders Kit, SS/Black, ARM251-BLK
1 of 6 images
Armaspec Superlight .223/5.56mm Gun Builders Kit, SS/Black, ARM251-BLK
Armaspec Superlight .223/5.56mm Gun Builders Kit, SS/ODGreen, ARM251-ODG
2 of 6 images
Armaspec Superlight .223/5.56mm Gun Builders Kit, SS/ODGreen, ARM251-ODG
Armaspec .223/5.56 Superlight Gun Builders Kit, SS/Blue, ARM251-BLU
3 of 6 images
Armaspec .223/5.56 Superlight Gun Builders Kit, SS/Blue, ARM251-BLU
Armaspec Superlight .223/5.56mm Gun Builders Kit, SS/FDE, ARM251-FDE
4 of 6 images
Armaspec Superlight .223/5.56mm Gun Builders Kit, SS/FDE, ARM251-FDE
Armaspec Superlight .223/5.56mm Gun Builders Kit, SS/Bronze, ARM251-BRZ
5 of 6 images
Armaspec Superlight .223/5.56mm Gun Builders Kit, SS/Bronze, ARM251-BRZ
Armaspec Superlight .223/5.56mm Gun Builders Kit, SS/Red, ARM251-RED
6 of 6 images
Armaspec Superlight .223/5.56mm Gun Builders Kit, SS/Red, ARM251-RED

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Questions & Answers
Will the safety selector work with a lower that does not have an ambidextrous safety? Expert Answer

Yes, the the Armaspec Superlight AR-15 Gun Builders Lower Parts Kit can be used on a Mil-Spec AR that does not have an ambidextrous safety.

by Hunter, Gear Expert, June 3, 2022
View All Q&A You Have a Question? Ask!
Customer Reviews
Helpful Positive Review
Armaspec Lower build kit. by MI3GunR, Verified Owner, March 14, 2021
I have used this kid on 4 separate AR platforms and I refuse to go with anything else ever since I started using this lower kit. I have over 1000 rounds out of one AR and have experienced zero problems. Safety selector you can choose 90 or 45 degre...
Read More...
1/1 found this helpful
Helpful Negative Review
Major fitment issues by J.O., Verified Owner, January 4, 2024
For reference, my lower is a Aero Precision billet lower (NOT BLEM). Issues: Trigger pins have .5mm of play/slop. Safety Selector has 1mm of play/slop. Front takedown springs is crazy stiff (will probably break-in with time). I am extremely unha...
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1/2 found this helpful
Most Recent Reviews
My bolt catch won’t stay open. When Ammo is empty. by Hasnain Agha, Verified Owner, March 1, 2022
It looks pretty everything works fine except my bolt is not holding back once the ammo runs out. It’s supposed to hold my bolt back , the bolt catch is not working properly. I took it apart twice and put it back in I don’t know why it’s not letting t...
Read More...
0/5 found this helpful
Most Recent Reviews
Armaspec Superlight .223/5.56mm Gun Builders Kit by Barry Shively, Verified Owner, August 23, 2025
Kit is very nice, good fit and finish. Price seems on point for colored components.
Most Recent Reviews
polymer feel by Jayr738, Verified Owner, July 27, 2021
I didn’t like that the take down pins and safety select were made of polymer. Safety selector doesn’t sit flush either. For 70$ I expected much better. It matches with magpul fde furniture that’s the only good thing about it. Other then that it looks...
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0/5 found this helpful
Most Recent Reviews
Wrong part packaged. by Mike, Verified Owner, May 21, 2025
The retainer and spring that stop the buffer spring are way too big. I had to take parts off of another rifle. During close inspection i think they might work in an AR 10. So now i have a spare. For someone just starting a build tho...
Read All 18 Reviews
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Help support American manufacturing! Marked models of this product have gone through rigorous review and been certified by the manufacturer as Made in the USA.

Product Info for Armaspec Superlight .223/5.56mm Gun Builders Kit

If you want to put together your own AR 15 Lower Receiver, pick up the Armaspec Stainless Steel Gun Builders Lower Parts Kit today! Containing everything you need except for the trigger group and grip, this is the perfect option for both experienced and new builders.image

The stainless steel parts are designed to be durable, smooth, and efficient, even after regular use, ensuring your weapon functions perfectly every time. This kit includes the entire bolt catch assembly, as well as everything you need for the magazine catch and release and the takedown/pivot pins.

WARNING: California`s Proposition 65

Specifications for Armaspec Superlight .223/5.56mm Gun Builders Kit:

Manufacturer: Armaspec
Caliber: 5.56x45mm NATO
Gun Make: AR Platform
Gun Model: AR-15
Gun Type: Rifle
Country of Origin: USA

Features of Armaspec .223/5.56 Superlight Gun Builders Kit

  • Includes Armaspec Enhanced Lower Parts
  • Compatible with most AR-15 lowers
  • made in specialized factories
  • Lifetime Warranty

Package Contents:

  • Armaspec .223/5.56 Superlight Gun Builders Kit

Armaspec Superlight .223/5.56mm Gun Builders Kit Orderable Models

List of Orderable Models

  • Armaspec Superlight .223/5.56mm Gun Builders Kit, SS/Black, ARM251-BLK , MPN: ARM251-BLK , UPC: 810048491384 , Code: AMS-LPK-AURCSGBK-ARM251-BLK
  • Armaspec Superlight .223/5.56mm Gun Builders Kit, SS/ODGreen, ARM251-ODG , MPN: ARM251-ODG , UPC: 810048491407 , Code: AMS-LPK-AURCSGBK-ARM251-ODG
  • Armaspec .223/5.56 Superlight Gun Builders Kit, SS/Blue, ARM251-BLU , MPN: ARM251-BLU , UPC: 810048491421 , Code: AMS-LPK-AURCSGBK-ARM251-BLU
  • Armaspec Superlight .223/5.56mm Gun Builders Kit, SS/Bronze, ARM251-BRZ , MPN: ARM251-BRZ , UPC: 810048493494 , Code: AMS-LPK-AURCSGBK-ARM251-BRZ
  • Armaspec Superlight .223/5.56mm Gun Builders Kit, SS/Red, ARM251-RED , MPN: ARM251-RED , UPC: 810048491414 , Code: AMS-LPK-AURCSGBK-ARM251-RED
  • Armaspec Superlight .223/5.56mm Gun Builders Kit, SS/FDE, ARM251-FDE , MPN: ARM251-FDE , UPC: 810048491391 , Code: AMS-LPK-AURCSGBK-ARM251-FDE

Armaspec Superlight .223/5.56mm Gun Builders Kit Unavailable & Discontinued Models

List of Unorderable Models

  • Armaspec Superlight Gun Builders Lower Parts Kit, AR-15, .223/5.56, Purple, ARM251-PRL , MPN: ARM251-PRL , UPC: 810048491445 , Code: AMS-LPK-AURCSGBK-ARM251-PRL
  • Armaspec Superlight Gun Builders Lower Parts Kit, AR-15, .223/5.56, Silver, ARM251-AG , MPN: ARM251-AG , UPC: 810048491438 , Code: AMS-LPK-AURCSGBK-ARM251-AG
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