wobblinwheel Posted June 30, 2014 Report Posted June 30, 2014 Well, I finally decided to give the Colt/Umarex M4 a good cleaning. I removed the Umarex "fake suppressor" that I have on there, and pulled out the "guts" along with barrel (if you can call it that), and gave the innards a good spray-down and lube. After reassembly, I drew a bead on an unsuspecting varmint (squirrel) in my yard, and I MISSED HIM! BY A MILE.......! So I put up a target, 30 yards away, and could barely hit the paper! I was shooting a good three inches low, and a tad to the right. I verified with the laser, open sights, and scope, all shooting low to the right. After re-zeroing all three sights, I'm back to good groups, just like normal. Now I gotta wonder: WHAT HAPPENED? You mean I can't disassemble this rifle, and clean it without having to sight it in AGAIN? Never happened before! I've got index marks on the barrel and suppressor to keep the tension right. I just can't figure it out. The more I deal with this "tensioned barrel" the less I like it.........any ideas???
Microgunner Posted June 30, 2014 Report Posted June 30, 2014 I'm with you. I believe this is a less than ideal setup.
techmike Posted July 2, 2014 Report Posted July 2, 2014 Can't say regarding yours, but here is why I quit using the fake can. All of the Colt barrel attachments, (fake can, flash hider, ect), have an o-ring that assists in centering the barrel in the attachment. If the o-ring breaks, point of impact will change every time you loosen / tighten the attachment. Check out the picture of the inside of my fake can. At least my o-ring is still there..... If it is missing it can be hard to figure that out. Plus, the OEM o-ring is a flimsy little thing - I milled out the flash hider a bit and put an oversize o-ring on it, and have not had any further issues.
wobblinwheel Posted July 2, 2014 Author Report Posted July 2, 2014 Thanks, TM. I believe You have "hit the nail on the head". I have been able to disassemble my fake suppressor, and discovered the o-ring, while not broken, was somewhat distorted, and appeared some form of "debris" had gotten between o-ring, barrel, and can. I swapped the o-ring from the original flash-hider, cleaned the areas of contact VERY thoroughly, and re-assembled. Everything is pretty much back to normal now! It's a shame these things weren't designed with a "cone/reverse-cone" setup which would center precisely, without the use of a piece of RUBBER! Just a bad design, methinks... By the way, the "can" can be easily disassembled by heating the muzzle end with a propane torch and using the tool that came with it to unscrew it. Very necessary in this case. Has anyone discovered an over-the-counter o-ring that will work?
techmike Posted July 2, 2014 Report Posted July 2, 2014 Tac22 Member VNRanger posted this: http://tactical22.net/forum/colt-umarex-general/rubber-o-ring-dimension/Happy to hear your issue is resolved!
asmurff Posted July 3, 2014 Report Posted July 3, 2014 I think I'll stick to my Spike's Tactical-15 with the CMMG conversion in it.
techmike Posted July 12, 2014 Report Posted July 12, 2014 I think I'll stick to my Spike's Tactical-15 with the CMMG conversion in it.Where is the fun in that??? ;D
wobblinwheel Posted July 12, 2014 Author Report Posted July 12, 2014 Yeah, really. What would WE do if everything worked??
Microgunner Posted July 12, 2014 Report Posted July 12, 2014 Yeah, really. What would WE do if everything worked??I'd get laid.
wobblinwheel Posted July 13, 2014 Author Report Posted July 13, 2014 That statement I made was clearly hypothetical.....
techmike Posted July 13, 2014 Report Posted July 13, 2014 I'd get laid.There are several ways to interpret this..... :confused:
wobblinwheel Posted July 13, 2014 Author Report Posted July 13, 2014 I know. Teehee....even in a perfect world, if it was raining %#$$&#s, I'd get one with a #$&@ stuck in it!
Microgunner Posted July 14, 2014 Report Posted July 14, 2014 There are several ways to interpret this..... :confused:Strictly heterosexual. But for you I might consider switching teams. 8)
techmike Posted July 14, 2014 Report Posted July 14, 2014 With the name "Micro gunner"? I'm thinking, no. >:D
wobblinwheel Posted July 14, 2014 Author Report Posted July 14, 2014 Oh, good grief........where is THIS going?
Microgunner Posted July 14, 2014 Report Posted July 14, 2014 With the name "Micro gunner"? I'm thinking, no. >:DHey! My ex-wives gave me that nickname. I always thought they were referring to my passion for rimfires. :confused:
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