Windham Weaponry 9mm GMC Carbine AR-9, 16 in 4150 CMV QPQ, Glock-Mag Compatible, Timney PCC Trigger, 1/2x28 Threaded, 13 in Free-Float M-LOK
This Windham Weaponry 9mm GMC Carbine is a Glock-magazine-compatible AR-9 with direct-blowback operation, a 16 in 4150 CMV QPQ-treated barrel, and a free-float 13 in M-LOK handguard. It features a slick-side flat-top billet receiver set, a last-round bolt hold-open, and an installed Timney PCC single-stage trigger. The package includes four 17-round magazines and the original OEM fire-control group.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Overall Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: The firearm shows a few minor, superficial scratches and small blemishes from handling. The bore presents a bright, mirror finish.
What’s Included
- 4x 17rd Glock-pattern 9mm magazines (mix of Glock OEM and Magpul PMAG GL9)
- Windham Weaponry OEM fire-control group (trigger, hammer, disconnector with springs); not installed
- M-LOK 1913 Picatinny accessory rail section installed on handguard
Built on a 7075-T6 billet aluminum receiver set with a black hardcoat anodized finish, this carbine uses a slick-side flat-top upper with no forward assist or ejection-port cover and an integral trigger guard. It retains familiar AR controls, including a manual safety selector and a standard AR rear charging handle. The lower is marked "MOD. WW-SR."
The 16 in barrel is made from 4150 CMV 11595E steel with a Melonite QPQ finish for durability. It is threaded 1/2x28 and fitted with a knurled thread protector. A 13 in free-float aluminum M-LOK handguard with a full-length top Picatinny rail provides ample accessory mounting, and a detachable 1913 rail section is installed at 6 o’clock.
This AR-9 is Glock-magazine-compatible and supports a last-round bolt hold-open. Capacity is 17+1 with the included 17-round magazines. The platform uses a semi-automatic, direct-blowback action and has no factory sights installed.
A Timney PCC single-stage trigger is installed for a clean, consistent pull. For those who prefer stock configuration, the original Windham Weaponry OEM fire-control group is included (not installed). Timmy ar pcc single stage trigger.
The carbine is outfitted with a Magpul MOE 6-position collapsible stock and a textured polymer pistol grip. Overall length is approximately 30.75–34.5 in, and weight is about 6.7 lb without a magazine. Manufacturer part number is R16FTT-9MM, and it is made in the United States.