azmaxfan Posted March 7, 2011 Share Posted March 7, 2011 (edited) A friend is buying a Factory Benelli M4 two shot extension and asked if he needs a new spring with this setup? I said duh... I need to on Benelli USA Forums to ask. I couldn't convince him to buy a one piece mag. Thanks in advance for the answer. Edited March 8, 2011 by azmaxfan Quote Link to comment Share on other sites More sharing options...
StrangerDanger Posted March 7, 2011 Share Posted March 7, 2011 It should work fine, but a replacement from carriercomp would perform better. Quote Link to comment Share on other sites More sharing options...
daniel333 Posted March 7, 2011 Share Posted March 7, 2011 mine worked fine with the factory spring and +2 extension. Quote Link to comment Share on other sites More sharing options...
heckler&kochp2000 Posted March 7, 2011 Share Posted March 7, 2011 The answer to your question is NO! Quote Link to comment Share on other sites More sharing options...
kendeepdiver Posted March 8, 2011 Share Posted March 8, 2011 I just shot my M4 for the 1st time last weekend with a factory Benelli + 2 extension tube (# 81043p) with stock spring & put about 100 rounds thru it with no concerns.I am puting a full length tube on it tonight & will be selling the Benelli + 2 tube. Looks like new($75.00 shipped) or best offer.Please contact me by e=mail or phone. Shipped from sarasota florida Thanks, Ken kendeepdiver&hotmail.com 941-350-3501 Quote Link to comment Share on other sites More sharing options...
azmaxfan Posted March 8, 2011 Author Share Posted March 8, 2011 I just shot my M4 for the 1st time last weekend with a factory Benelli + 2 extension tube (# 81043p) with stock spring & put about 100 rounds thru it with no concerns.I am puting a full length tube on it tonight & will be selling the Benelli + 2 tube. Looks like new($75.00 shipped) or best offer.Please contact me by e=mail or phone. Shipped from sarasota florida Thanks, Ken kendeepdiver&hotmail.com 941-350-3501 E-mail sent. I'll take it and sell to my friend. Quote Link to comment Share on other sites More sharing options...
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