MRA Renegade Rifles, Parts, and Kits now available

Hi, which muzzle device is that and which stock? Thanks!

Dmitri said:
Finally got my 12.5" barrel from BA in 6.5 grendel, this beast in now complete. Well almost, a Vortex Venom red dot is on the way to be installed on the 45 degree mount. :) Im also thinking of giving it some nice colorful battle worn finish with cerakote. Just need to decide on the colors..maybe bronze under black or perhaps orange under gray would look nice too.. i will keep you guys posted.
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Brian46 said:
An ar bolt unlocks when fired. So with this straight pull design, is the unlocking mechanism going to withstand the increased chamber pressure or just let the bolt loose.

In an AR this is not a concern because the unlocking and rearward movement of the bolt upon firing is expected and buffered.

Forgive me for sounding stupid here, but there has been failure of other rifle straight pull designs resulting in serious injury when the bolt shoots rearward

I guess my question is, what prevents the camming action of the bolt when fired that would allow it to unlock and how strong is it?
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Philosoraptor said:
I think you can rest easy. In battery, the bolt is resting on the 7 locking lugs of the barrel extension. It will not unlock until you manually pull the charging handle backwards, camming open (via the cam pin, same as any modern sporting rifle) the rotating bolt to release from the locking lugs and allowing rearward travel of the bolt carrier. For a semi-auto MSR, it should be the same, the locking lugs will retain the bolt in battery upon being fired until the gas system cams open the bolt via direct impingement into the gas key forcing the bolt carrier rearward (as you would with the Renegade but with your hand). Granted there may be some extra pressure on the locking lugs as the carrier will remain in battery for the bullets entire cycle/burn through the barrel, but I don't think it would warrant anything excessive.

Now I think what you're alluding to is a failure of all the locking lugs, thereby allowing the bolt to move rearward unintentionally upon being fired? I don't think it should be an issue or danger, In the unlikely event that all 7 of those lugs break at once, you still have a carrier that is almost similar in weight to a full mass M16 BCG, which also has a buffer spring and weight behind it. Not to mention it would have to overcome those forces and punch through your aluminum buffer tube end plate and stock. Worst thing I see happening is the charging handle slaps your hand if you're holding the rifle improperly.

Just my opinion, worth what you paid for it, I am no engineer by any means
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Actually, the bolt lugs will be less stressed with the manual load, in semi-auto the chamber is still under pressure when the lugs turn, in this setup the pressure on the lugs is 0 during unlocking.
Normally in semi mode by the time the bullet has reached the gas port and starts to unlock the pressure is already dropping, not worst than shooting in a 26" barrel.
 
Dennisan said:
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Arrived today and was really easy to put together. Plan to take her out tomorrow to see how she shoots.

Fit and finish are great! Very happy with the quality of the product. With the Maxim Defense CCS stock, 10.5 inch barrel, and Warden it comes in at 27 inches... if it hasnt been mentioned already, the receiver is 7 3/4 inches long (excluding the barrel nut threads).

Notes:
- Using Radian takedown pins I did notice some play between the upper and lower receivers, but this was resolved by using the supplied takedown pins.
- if you are using a Geissele Handguard you are going to need to grind down the anti-rotation tabs
- I really like how tight the magwell is while still accepting various metal and plastic mags without issue
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Beautiful build my friend! Could your throw her on a scale and tell us what the overall weight of this rifle comes to? Also what barrel did you end up going with
 
The receiver can be accurate with the appropriate barrel. I had a good group going with this .277 at 200 yards until I pulled the second to last one.

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My own humble contribution. I think the receiver set deserves much more than the bargain basement parts I have mounted to it, but I’ll upgrade as time/money allows.

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I definitely need to get used to loading. I’m guilty of prematurely releasing the bolt forward, repeatedly half-catching the next snap-cap.
 
Can someone please tell me the measurement of the opening of the bolt carrier group. I'm thinking of installing a Sylvan Arms folding stock mechanism Gen 3 and the bolt extension requires a .625 opening on the BCG.
 
Turf said:
Can someone please tell me the measurement of the opening of the bolt carrier group. I'm thinking of installing a Sylvan Arms folding stock mechanism Gen 3 and the bolt extension requires a .625 opening on the BCG.
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I got .633 on my crappy no name micrometer I have at home.

You should be good to go.
 
littlejackal said:
My own humble contribution. I think the receiver set deserves much more than the bargain basement parts I have mounted to it, but I’ll upgrade as time/money allows.

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Looks fine to me. Even the profile of the handguard and receiver seem to match up nicely. If it works fine I wouldn't change a thing.
 
Has anyone had any issue with gen 3 Pmags not working properly? I have 5 of them and they all insert too far into the rifle and the BCG catches on the feed lips or follower. all of the gen 2 mags I have and all of my steel mags work great and have no real issues.
 
Windy day at the range today with another load development run with a 30 HRT/HAR. CFE BLK seemed to be the powder I will tinker with and the Speer 125 gn projectiles.

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Here is a picture of my x39 Renegade. Donor was an NEA 14.5", that was a GREAT running AR.
I put about 150 rounds down the pipe yesterday (2004 Norinco brown case non-corrosive FMJ). Extraction gets quite hard once the barrel/chamber get warmed-up (so after 10-15 fairly quick shots). But was then way easier after she cooled down for 20 minutes. I will try some different ammo next trip.
The only other x39 I had with me was Czech corrosive with the varnished cases (My T81 LMG gobbled all of that up with a smile).

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I have shot maybe 100-200 rounds through mine flawlessly but today I took off the gas port seal and I see my gas port is completely clogged by what looks like copper jacket. It is very hard and I am not sure how to get it out of the gas port.
 
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