The Alex Pro Firearms Proof SS pistol in .223 Wylde (brand part no. RI-215) is built around a 14.5-inch Proof Research stainless steel barrel, a premium match-grade barrel maker better known for precision rifle builds. Alex Pro Firearms pins and welds an A2 flash hider to the muzzle and wraps the barrel in a 12.5-inch M-LOK handguard, while an M16-pattern nitride bolt carrier group cycles the action. The pistol ships bare, with no brace attached, and pairs an enhanced trigger guard with an A2 pistol grip for a simple, mil-spec control layout. Among AR pistols built around a precision barrel, this Proof SS configuration favors shooters who want match-grade accuracy in a compact platform.

Key Specifications

• Chambered in .223 Wylde, safe for both .223 Remington and 5.56 NATO ammunition.
• The barrel is a Proof Research stainless steel barrel, measuring 14.5 inches.
• Rifling twist is 1-in-7 inches.
• An A2 flash hider is pinned and welded to the muzzle.
• The 12.5-inch M-LOK handguard covers the length of the barrel.
• The bolt carrier group is M16-pattern, nitride finished.
• The pistol ships with a 30-round Magpul PMAG Gen M2.

Frequently Asked Questions

What makes the Proof Research barrel notable? Proof Research is known for match-grade precision barrels, here in a 14.5-inch stainless steel pistol-length configuration.

Does this pistol include a brace? No, it ships bare with no brace attached.

Does it include a magazine? Yes, a 30-round Magpul PMAG Gen M2 ships with it.

Buy the Alex Pro Firearms Proof SS Pistol

A Proof Research stainless barrel and an M16-pattern nitride bolt carrier bring genuine precision-rifle parts to a compact .223 Wylde pistol. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.