Home Shop AR15 Lower Receiver Parts Saltwater Arms Blackfin™ AR15 Stainless Steel Lower Parts Kit—Assembler’s Special

All Saltwater Arms components are high quality, 100% American made. Each kit is guaranteed to fit your Mil-Spec dimensions lower receiver. We don’t use foreign made parts, polymer parts or MIM parts. This kit contains the basics, add your own fire control group, trigger guard and grip for the ultimate custom built lower.

Assembler’s Special Stainless Steel AR15 Lower Parts Kit Includes:

Bolt Catch, Stainless Steel
Bolt Catch Roll Pin, Stainless Steel
Bolt Catch Detent, Stainless Steel
Safety Selector, Stainless Steel
Selector Detent, Stainless Steel
Magazine Catch Assembly, Stainless Steel
Fire Control Group Pins, Stainless Steel (2)
Takedown Pin, Stainless Steel
Pivot Pin, Stainless Steel
Takedown Pin/Pivot Pin Detents, Stainless Steel (2)
Buffer Retainer Pin, Stainless Steel
Trigger Guard Roll Pin, Stainless Steel
Trigger Guard, Hard Coat Black Anodized
Complete Spring Kit, Stainless Steel
100% American Made

Specifications

Colors	Silver
Platform	AR15
Manufacturer	Saltwater Arms

Reviews

Bud Dickson April 24, 2025

A good kit. Other than the pivot pins it is not shiny stainless, if you are looking for shiny be prepared to sit down with some fine grit sand paper, a dremel with a polishing pad and some metal polish. I knocked a star because the mag release didn't fit, had a bulge in the side so I had to take a file to it, flatten/square the sides then polish the edges. Used this kit with an Aero upper and lower, it may fit other brands with no issues. Shipping was extremely quick. Thank you JSE!