About gsr

Iron Horse/Blackwater Sentry 12

Pump action, detachable magazine fed tactical shotgun with an aluminum chassis, 18.5 inch cylinder bore barrel, ambi safety, mag release, and slide release. Included in […]

Nikon 2-7×32 rifle scope with mount

BDC reticle for 22lr. Box and all instructions are included. Leupold mount for AR type rifles is included. Refinished with Brownell’s Alumahyde. Cash or Venmo […]

Steel mag catch for Glock 43

Steel mag catch for the Glock 43 (not the 43X) For use with Shield Arms E9 metal body magazines, but I have found it works […]

RMR mount

Co-witness (1.53”) height mount for any optic with the RMR footprint. Mounts to any Picatinny/1913 rail. Uses 6-40 screws for attaching the optic. Cash or […]

AR-9 Buffer and Spring

7.7 ounce buffer for 9mm AR type pistols and pistol caliber carbines. Cash or Venmo Text is best

ALG Defense muzzle brake

Compact muzzle brake optimized for 223/5.56, but usable for any cartridge with a 22 caliber bullet or smaller. 1/2-28 threads Crush washer included Cash or […]

Scalarworks QD mount for RMR

1.57” height that will allow the optic you mount on this to co-witness with iron sights on standard AR-15 type firearms. It quickly attaches to […]