Parts & Upgrades
Find quality gun parts and firearm upgrades at American Tactical Supplies. Whether you’re building a custom AR-15, replacing a worn part, or upgrading your trigger, we have what you need.
Our parts inventory includes triggers, barrels, stocks, handguards, bolts, magazines, and more from leading manufacturers. No FFL required for most parts.
Showing 1–16 of 920 results
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In Stock-15% New.308 80% Lower – Billet
$86.99 Add to Cart -
In Stock-15% New.308 80% Lower and LR-308/AR-10 Lower Parts Kit (w/ Hammer and Trigger)
$174.99 Add to Cart -
In Stock-15% New6 Pack: Marlin Rossi 95 Handguard Screws | Replacement
$6 Add to Cart -
In Stock-15% New80% Lower Fire/Safe Marked – Anodized Black
$54.99 Add to Cart -
In Stock-15% New80% Lower Patriot Pack
$274.99 Add to Cart -
In Stock-15% New9mm AR-9 80% Lower Receiver – Glock Compatible – Black
$139.99 Add to Cart -
In Stock-15% NewA2 Front Sight Post Assembly
$7.99 Add to Cart -
In Stock-15% NewA2 Rifle Action Spring
$4.49 Add to Cart -
In Stock-15% NewA2 Rifle Buffer Assembly
$13.99 Add to Cart -
In Stock-15% NewA2 Rifle Buttstock
$49.99 Add to Cart -
In Stock-15% NewA2 Rifle Buttstock Screw
$2.49 Add to Cart -
In Stock-15% NewA2 Rifle Buttstock Spacer
$2.99 Add to Cart -
In Stock-15% NewA2 Rifle Receiver Extension/Buffer Tube
$24.99 Add to Cart -
In Stock-15% NewAero Precision 16″ EPC-9 Enhanced 9mm Complete Upper Receiver
$530 Add to Cart -
In Stock-15% NewAero Precision 16″ EPC-9 Enhanced 9mm Complete Upper Receiver
$520 Add to Cart -
In Stock-15% NewAero Precision 8.3″ EPC-9 Enhanced 9mm Complete Upper Receiver
$450 Add to Cart