https://vizardsgunsandammo.com/ptr-6039kt-9kt-ar-pistol-semi-automatic-9mm-luger-5-16-30-1-black-black-nitride/
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The 9KT model features an M-LOK compatible aluminum handguard with attached finger guard. The nitride treated 5.16", 3-lug barrel is threaded to 1/2" x 28. Both a push button and paddle magazine release are standard. The 2.55 precision-welded top rail enables use of compact optics or the traditional iron sights (included). The aluminum end cap features a removable QD sling mount with attachable M1913 rail, stock adapter. The gun ships in a heavy duty range case with: single point bungee sling, two 30-round magazines and rear sight adjustment tool.

PTR 603 9KT 9MM 5.83 PSTL 3LUG 1/2X28TB RAIL
Mfg Item Num: 6039KT
Model Number: 9KT
Unit of measure: GN
Type: AR Pistol
Action: Semi-Automatic
Caliber: 9mm Luger
Barrel Length: 5.16
Capacity: 30+1
Safety: Lever
Sights: Iron
Weight: 4.8 lbs
OAL: 13.38
Barrel Length Range: 5.00 to 5.99
Weight Range: 4.00 to 4.99 lbs