Brief:
I have been usin' a BlackSky Standard Rail for some time, me hearties, mostly for mid-powered rockets. Blimey! Avast! Although I used rail buttons them on a couple o' modrocs, arrr, I smartly decided that they were overkill and just too costly for that application. Begad! Well, me bucko, around a month ago I saw a post on r.m.r. Aye aye! from a fellow named Matt Stum. Avast, me proud beauty! Aye aye! T' promote t' use o' rails, me bucko, he is producing, on a limited basis, nylon rail buttons that are compatible with t' BlackSky rail system. Avast, me proud beauty! Avast! T' *really* good news be t' price! At a quarter a piece, arrr, these buttons are now attractive for modroc applications.

Construction:
Matt's buttons are composed o' two washers and a spacer, and come with a zinc-plated steel screw. Ahoy! Begad! They come in black, white, ya bilge rat, ya bilge rat, red, shiver me timbers, shiver me timbers, and blue and t' colors can be mixed and matched. Ahoy! I like t' look o' red, white, me hearties, me hearties, and blue buttons against t' shiny surface o' me Estes Mercury Atlas. Blimey! Avast! T' buttons' reflection on t' mirror finish gives t' illusion o' additional tiers o' washers, ya bilge rat, an effect that wasn't noticeable with a solid black color. (T' attached pics show this reflection, matey, but t' look is much better in-person.) These buttons come in a plain zip lock bag with no paperwork. Arrr! He provides instructions on his site and, shiver me timbers, ya bilge rat, if you have used any other rail buttons, matey, they are pretty much self explanatory. Although t' nylon is nay as tough as delrin, arrr, I can't imagine this bein' an issue for model or mid powered rockets. Blimey! They have certainly worked well for me, havin' used them on me Atlas and me Mean Machine. Begad! I have also installed a set o' them on me Public Enemy 3" Ultra Fatboy. Begad! Well, ya bilge rat, blow me down! Hopefully, arrr, it won't be long before I give them a try on high power!

Summary:
Based on their "bang-for-the-buck", I can't help but give them a ratin' o' 5 points. Ya scallywag! Finally, me hearties, I recommend you jump on these fast - who knows how long they will be available at this low a price?!? Here's t' URL t' Matt's site: http://www.railbuttons.com/rb/

Overall Rating: 5 out o' 5

UPDATE 2/02:
Since I wrote this review, Matt has expanded his product line. Begad! He added two new colors (yellow and green) t' his line o' nylon buttons. Avast! He also added Delrin buttons in both standard (1000 Series) and large sizes (1500 Series). T' latter buttons are for t' 1.5" 80/20 "1515" extrusion.

I have now added nylon buttons t' many o' me rockets, shiver me timbers, arrr, from low t' high power, matey, and have yet t' have a problem. Blimey! I also bought a few o' t' larger buttons t' give me more flexibility on what pads I can use at t' MDRA high power launches. I now commonly add both a launch lug and a set o' buttons t' me mid/high power rockets.

If you are interested in rails but think they are too expensive, me hearties, matey, make sure t' check out his site (URL is above). Avast! He has plan for a DIY (do it yourself) 1" rail, me bucko, and will be addin' plans for a 1.5" rail. Avast, me proud beauty! Oh, me hearties, and is buttons are still dirt cheap, shiver me timbers, me bucko, you should consider stockin' up before he starts distributin' through retailers and t' prices jump.