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Posted: 11/13/2018 2:48:59 AM EDT
[#1]
Only thing I can think of that would be less expensive than a Shrike or MCR (Shrike without the beltfeed), and cheaper than an LMG upper, but still actually useful, would be a super-heavy bull barrel upper and some cheap square handguards.
Super-HBAR to soak up some mag dump heat, square handguards for style. Add a bipod to complete the look and give you someplace to rest the weight. |
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Posted: 11/13/2018 8:21:45 AM EDT
[#2]
good chance to give a new life to those HBAR uppers
I think you can get them for cheap since they're not tacticool |
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Posted: 11/13/2018 10:20:38 AM EDT
[#3]
I had saved the money to buy a MCR and at the last minute changed my mind and used the money to buy an M11 instead.
So to fill that LMG roll I bought a cheap upper during one of PSA holiday sales, picked up a 100 round drum mag, and some UTG BUIS (actually pretty good quality). The m16 BCG and bipod were sitting in my parts bin. (See video below) I am planning to rebuild the upper at some point, next time I will go with a quad rail as parts tend to shake loose on the keymod rail and I will go with a 16" heavy barrel instead of the 10.5" medium contour to absorb more heat, reduce recoil by adding more weight to the rifle, and reduce the concussion you get out of that short barrel. Also I will go with a Magpul D60, they are more reliable, easier to load and less awkward to hold than the 100 rounds twin drum mags. Its not as fun as lining up a belt and slapping the top cover down on an MCR, but for the price its hard to beat. You can literally build an entire upper including sights, bipod, drum mag, etc....for less than the price of a spare MCR barrel! I typically only use it for new shooters who want to do mag dumps. It allows them to securely sit or lay down behind the gun and they can burn through mags and abuse the upper and I don't care because I can swap out the barrel for under $100 if I have to.  M16 full auto with muzzle break |
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Posted: 11/13/2018 3:27:54 PM EDT
[#4]
Guys thanks for all the advice. Is there a recommendation for a more robust gas tube to use? I think the Colt LMG upper used a specific gas tube that is more tolerant of sustained FA fire. Does anything like this currently exist on the market?
By the way, now that the Colt LMG uppers are going for so much money and binary triggers and bump stocks are so prolific, I would imagine that there is a market for a $500 to $800 upper like this (for people with m16's, bump stocks, binary triggers, etc.) that uses mostly all off the shelf parts to keep costs down, with maybe a couple unique parts. |
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Posted: 11/13/2018 6:48:50 PM EDT
[#5]
Quote HistoryQuoted:
Guys thanks for all the advice. Is there a recommendation for a more robust gas tube to use? I think the Colt LMG upper used a specific gas tube that is more tolerant of sustained FA fire. Does anything like this currently exist on the market? By the way, now that the Colt LMG uppers are going for so much money and binary triggers and bump stocks are so prolific, I would imagine that there is a market for a $500 to $800 upper like this (for people with m16's, bump stocks, binary triggers, etc.) that uses mostly all off the shelf parts to keep costs down, with maybe a couple unique parts. Re: JT I will share. Really no big deal. I miked Posted By: Shoepop Date: 12/22/04 15:56 In Response To: Talk you out of details on auto brake lines (JT) an old gas tube. Went to local Napa and went through their stainless brake lines with a dial caliper until I found one that was about 0.200 diameter.Anyway I installed a small piece of drill bit in end hit it with a weld then dressed it up. Note: only stick bit in enough to be able to weld up or you will run into piece of drill you just installed when drilling new tube retainer hole. Next drill your front sight gas tube hole to new gas tube diameter. Measure and drill new tube for retainer pin and gas hole. Bend to shape of old tube cut to length. Now either chuck up new tube in drill and sand or chuck it in a lathe (before you bend) that is what I do and take it down so it will fit stock carrier key same diameter as old ( this is what they do on LMG tubes) no problem because gas is a lot cooler when it get's to key so you are not defeating you purpose of installing heavier tube. They will not fail there. I have also drilled the key to new tube diameter in lieu of stock diameter but turning down to fit stock is easier in my opinion. I hope this all make's sense. It's really a lot easier to do than explain. The actual diameter of a factory LMG tube is 0.2530 you can't drill out a stock front sight hole that large but you can get a after market gas block and drill as large as you want, install a removable front sight assembly and you will have as large/heavier as that of a LMG tube. It will now take MANY full beta dumps if so inclined. I have a bunch of old 20" pencil barrels and when they are worn out I just move the assembly to next barrel. Finally in your search for correct diameter look @ tubes for hydraulic clutches etc. Also race car parts catalogs are a good source. |
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Posted: 11/13/2018 10:04:50 PM EDT
[#6]
Quote HistoryQuoted:
Is there a recommendation for a more robust gas tube to use? turn down on both ends to fit 
I had these built a long time ago for a m16 but never really used them as I got into beltfeds |
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Posted: 11/13/2018 11:07:02 PM EDT
[#7]
There are also inconel gas tubes available, but they are fairly pricey:
https://www.vsevenweaponsystems.com/v7-extreme-environment-gas-tube/ |
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