Stag Arms

Stag Arms ranks #101 of 518 brands on GunPartPicker so far in November 2026, just behind Q, with about 1 in every 1000 parts builders added. Up from #128 in October. Builders are reaching for Stag Arms mostly for upper receiver parts. The most added single part is the M4E1 Threaded Stripped Upper Receiver - Anodized Black (BLEM), taking the top spot from the M4E1 Complete Lower w/ ALG QMS, B5 P23 & Bravo Stock - Coyote/Kodiak Brown Anodized.

About 5% of the 353 Stag Arms products we track are in stock today.

Also popular this month: Stag Arms AR-15 A3 Flattop Upper Receiver Stripped Direct Impingement Type 3 Hard Coat Anodized Left Hand Black, Stag Arms AR-10 Stag 10 Stripped Upper Receiver .308/6.5 Creedmoore Right Hand .210 DPMS High Profile Type 3 Hard Coat Anodized Black, Stag Arms AR-10 Tactical Right Hand Upper Receiver 308 Win 16in Barrel TAC-GOV-CMV Profile 1-10 Twist 5/8X24 Thread VG6 Gamma FDE and Stag Arms AR-15 A3 Upper Receiver Assembly 5.56mm Left Hand.

Why Stag Arms

Stag Arms started in New Britain, Connecticut in 2003 and moved to Cheyenne, Wyoming in 2019. It's the AR maker known for true left handed rifles.

A Stag left hand rifle uses a mirror image upper, so brass ejects to the left, and the safety sits on the right side of the lower.

The line covers Stag 15 AR-15s, Stag 10 rifles in .308 and 6.5 Creedmoor since 2017, PXC pistol caliber carbines and Pursuit bolt actions.

Stag uppers cost a bit more than most, about $470 against roughly $400. Stag shared owners with Aero, and in 2026, after Aero went through receivership, a family investment group bought Stag, Aero and their sister brands. In early October only about 1% of Stag listings across stores were in stock.

We'd buy Stag if you shoot left handed and find one in stock. Right handed shooters have easier options while supply recovers.