[Phalanx]

Well hello guys ,i am a newb,over from the 1919A4 site. I just got my XCR ,from a dealer in Nevada. I love the ergononics of the rifle and the way it handles. I am still going through the break in period ,by the American stuff shoots well.I bought an XCR because i have two friends who bought the 556 ,both of them have had to send the rifles back and havent recived them for over a Mth. I went with the Magpul grips and rail covers ,troy sights ,and thinking about a euro tech.

 

[Phalanx]

Guys, really ,i have an XCR and i like it as much as the rest of you do .But i hate to be a devils advocate about these rubber buffers.Look on Gun Broker at the amount of 770s and 630s that are for sale ? I have called on them and they would hang up when i asked them about the buffer ,so if you buy one ,you get his problem,NO Buffers. These are held in place by a tiny tit ,it breaks off your buffer is running around inside your rifle. I have been in contact with Curtis and told him i want spares ,i still havent heard back ,all are being used in production rifles. A lot of companys have tried this system ,only to abandon it because of this problem in the field ,and went with the spring system ,one was stoner.I am a retired Naval Weapons officer ,i have seen this numerous times.In the 80s ,H&K told me the same thing all who use this say ,we havent had any problems ,yeah on new rifles ,give them 10 years and a bunch of rounds and see what happens ,some failed in 4 years. I am not saying the XCR isnt a good rifle or the recoil system isnt a good one ,just keep spare buffers .My 770 is the best hunting rifle i ever owned ,as long as i could keep it going.

 

[Phalanx]

Need to add ,later in devlopment H&K began useing counter sunk rivits to hold in the buffer on thier battle rifles ,this worked very well.
Part of the problems with the old style of buffer is the tits ,they are small barb like devices pushed into metal , thus if the buffer moves under stress they shear . Think about it. FNH got away from this and went to the ( rat tail ) on the bolts of thier LAR rifles ,this also was a disaster .now open an FN and you see the Stoner spring system.

 

[Phalanx]

Open your gun ,look in the reciver at the rear ,it is the little rubber thing you see there in the back . Can you move it around with your finger? yes i thought so. In time being subjected to oil ,solvent ,and pounding it will shear or crack. Not that it is a bad system ,but when i was in the Navy ,,testing some rifles ,, this caused them to be rejected alone. Not that i care for them ,but i will say this about a Cetme ,they went to a little spring plunger . Pretty soon the H&K 93 (223 ) went to one built into the bolt. The 91 riveted its buffer in place ,It is the mounting tits that fail. I really hate to say this about a rifle i feel has a lot of promise . But i have been here and i have done this long ago ,and i saw a lot of really good rifles get canned over an AR because of this reason. And an XCR is light years ahead of an AR.