TexasCHLforum.com

My favorites in NW Houston (I reside here).

Tomball Pawn in Tomball - Fair prices, great selection.
14011 FM 2920 Road
Tomball, TX 77377

Spectre Firearms off of 249 and Spring Cypress - Best prices on Glocks I've seen outside of gunshows, not sure if it was permanent or sale pricing, but they were the same the 3 times I've been there. Great selection of accessories. I have experienced great service the three times I've visited, friendly atmosphere.
10801 Spring Cypress Rd. 14
Houston, Texas 77070

Gander Mountain off of 290 - Best place for cleaning supplies and sporting goods, but prices aren't that great. Selection is decent if you're window shopping.
19820 Hempstead Hwy
Houston, TX, 77065

Armory Management and Supply Services off of FM1960 and Jones between Hwy249 and Hwy290 - I have not been here personally, but I've heard good things about them.
11010 Jones Rd.
Houston, Texas 77070

And if I'm not mistaken, the only gunshow within Houston's vicinity this weekend is Real Gun Shows in Pasadena, but that is Southeast Houston.