Guest cleefurd Posted October 29, 2010 Share Posted October 29, 2010 (edited) Benelli varies these (2) dim's on their M4 barrels, particularly on the entry length version. A former 2112 (USMC Match Armorer now with the Army) asked me for input to compare with his rack M1014's, both full length and SBS-entry guns. Anybody with a depth-mic (or that knows how to use the rat-tail on his calipers as a depth checker) please share these two dimensions. Obviously there are no wrong answers, but any insight shared would mean a lot. Thanks, Kip Edited October 29, 2010 by cleefurd Quote Link to comment Share on other sites More sharing options...
Guest cleefurd Posted October 30, 2010 Share Posted October 30, 2010 BTT These dim's are reaaaaallllllly important. Please help. When the "what-where-why" becomes apparent the effort will be worth it.... honest. Quote Link to comment Share on other sites More sharing options...
Guest cleefurd Posted October 30, 2010 Share Posted October 30, 2010 Rally cry .... I'll provide a free premium M4 spring to the first 20 posts providing those dimensions, from stand-up forum members with 50 or more posts. Kip Quote Link to comment Share on other sites More sharing options...
xamoel Posted October 30, 2010 Share Posted October 30, 2010 could you provide a pic or something of what we have to measure? i'll do it for free, it's just that my english isn't quite good enough to get what you're actually looking for. Quote Link to comment Share on other sites More sharing options...
KB Fab Posted October 30, 2010 Share Posted October 30, 2010 I'll measure mine as soon as I get back to the house. No premium needed Kip. Quote Link to comment Share on other sites More sharing options...
deltaopwong Posted October 30, 2010 Share Posted October 30, 2010 (edited) Here is what we measured at the shop.. Factory Entry barrel: I.D. - .720", O.D. - .915" Factory 18.1 barrel: I.D. cylinder choke at muzzle - .704", I.D. cylinder choke before muzzle where it meets the barrel when screwed in about 2+ inches in - .735", O.D. - .930" Hope that helps... Stan Edited October 30, 2010 by deltaopwong Quote Link to comment Share on other sites More sharing options...
AggiePhil Posted October 30, 2010 Share Posted October 30, 2010 I speak English just fine and I don't understand what he's asking for. I have a caliper too. Quote Link to comment Share on other sites More sharing options...
Guest cleefurd Posted October 30, 2010 Share Posted October 30, 2010 could you provide a pic or something of what we have to measure? Quote Link to comment Share on other sites More sharing options...
Guest cleefurd Posted October 30, 2010 Share Posted October 30, 2010 (edited) Axial distance between the yellow surfaces Edited October 30, 2010 by cleefurd Quote Link to comment Share on other sites More sharing options...
i_wish Posted October 30, 2010 Share Posted October 30, 2010 On my 18.5" barrel, using my "el cheapo" set of calipers, I get: Dim #1=.630 Dim #2=1.120 HTH Quote Link to comment Share on other sites More sharing options...
Guest cleefurd Posted October 30, 2010 Share Posted October 30, 2010 Thanks "i wish". PM sent Quote Link to comment Share on other sites More sharing options...
TacticalKoala Posted October 30, 2010 Share Posted October 30, 2010 I don't think there is enough room there for a grenade launcher lug, in-spite of what skeeter wants. Quote Link to comment Share on other sites More sharing options...
Guest cleefurd Posted October 30, 2010 Share Posted October 30, 2010 I don't think there is enough room there for a grenade launcher lug, in-spite of what skeeter wants. sssssssshhhhhhhhhhhhhhhhh Quote Link to comment Share on other sites More sharing options...
Guest cleefurd Posted October 30, 2010 Share Posted October 30, 2010 Might have something to do with this..... partly ; Quote Link to comment Share on other sites More sharing options...
KB Fab Posted October 30, 2010 Share Posted October 30, 2010 Kip, Dimension 1 = .616 Dimension 2 = 1.116 Both measurements were from my 11707 taken with my Starrett depth gauge so they should be pretty accurate. Hope it helps. KB Quote Link to comment Share on other sites More sharing options...
TacticalKoala Posted October 30, 2010 Share Posted October 30, 2010 Might have something to do with this..... partly ; Another foreign made part on a Benelli! Quote Link to comment Share on other sites More sharing options...
Guest cleefurd Posted October 30, 2010 Share Posted October 30, 2010 (edited) Another foreign made part on a Benelli! Not on the parts list, and finish machined for us by yours truly here in the US:) Edited October 30, 2010 by cleefurd Quote Link to comment Share on other sites More sharing options...
TacticalKoala Posted October 30, 2010 Share Posted October 30, 2010 Not on the parts list, and finish machined for us by yours truly here in the US:) Now if you could just make something for TOPS. Quote Link to comment Share on other sites More sharing options...
AggiePhil Posted October 30, 2010 Share Posted October 30, 2010 I thought it might have to do with replacement irons. Quote Link to comment Share on other sites More sharing options...
Duggan Posted October 30, 2010 Share Posted October 30, 2010 Working hard on those recoil reducers / 8th round extender combo unit huh? I would get you dimensions, but I don't want to give you bad info ... in the middle of a move and all my stuff is packed up somewhere, if you still need it in a few days I can get you it. Quote Link to comment Share on other sites More sharing options...
heckler&kochp2000 Posted October 31, 2010 Share Posted October 31, 2010 (edited) 18.5" 1st dimension .616 2nd dimension 1.116 Edited October 31, 2010 by heckler&kochp2000 Quote Link to comment Share on other sites More sharing options...
saym14 Posted October 31, 2010 Share Posted October 31, 2010 i have to agree the orig post was not very clear. Quote Link to comment Share on other sites More sharing options...
Guest cleefurd Posted October 31, 2010 Share Posted October 31, 2010 i have to agree the orig post was not very clear. A screen capture was the only way to convey the inquiry, sorry about the low-res quality. At any rate the feed-back is spot on:D. Great dimensions and priceless info. Offer still stands. Dimensions welcome here !!! Quote Link to comment Share on other sites More sharing options...
heckler&kochp2000 Posted November 4, 2010 Share Posted November 4, 2010 How is the research turning out ? Quote Link to comment Share on other sites More sharing options...
squawberryman Posted November 4, 2010 Share Posted November 4, 2010 Dim 1) .721 Dim 2) 1.185 sir Quote Link to comment Share on other sites More sharing options...
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