Knowledge Base - Topic : Questions Regarding Lower Receivershttp://www.bushmaster.com/faqs/afmmain.aspxWelcome to our knowledge Base Center. Here you will quickly find answers to some of our most commonly asked questions.FAQ # 2602 : I have a Bushmaster V-Match with the standard A2 stock, I'm going to use a Magpul MOE collapsible stock. Are there any extra parts besides the MOE stock that I will need to do this swap? Also, does my rifle have the commercial spec buffer tube? Thank youhttp://www.bushmaster.com/faqs/?f=2602Tue, 20 Jul 2010 00:00:00 GMTFAQ # 2562 : hi i'm thinking of ordering a carbon 15 stripped lower threw my FFL dealer and was wondering if a Magpul trigger guard can be installed on it ? from the pictures i have seen the trigger guard seem's to be a molded onto the receiver. thankshttp://www.bushmaster.com/faqs/?f=2562Sat, 03 Jul 2010 00:00:00 GMTFAQ # 2444 : what are the authentic or original markings of a bushmaster xm15 e2s?..tnx for the info!http://www.bushmaster.com/faqs/?f=2444Tue, 04 May 2010 00:00:00 GMTFAQ # 2442 : does bushmaster use commercial or mil spec buffer tubes?http://www.bushmaster.com/faqs/?f=2442Mon, 03 May 2010 00:00:00 GMTFAQ # 2438 : I just bought a model xm15-e2s a2 model 20 inch barrel, yesterday and when we got it home I went to remove the lower receiver takedown pin to do a quick cleaning and make sure it was lubed up to take to the range. I cannot slide the pin to break it down. Am I suppose to use a punch on this?? My memory from my military days is that this should just slide out with a small amount of pressure from your thumb. Do I need to have this taken to a gunsmith for repair??http://www.bushmaster.com/faqs/?f=2438Sun, 02 May 2010 00:00:00 GMTFAQ # 2413 : I want to replace my stock. It's the one that came with my Bushmaster M4A3 Carbine Post-Ban. I'm looking at an ACE Skeleton stock. They make one that is 9.9" and uses a standard A1/A2 receiver extension tube, buffer and spring. There is also the 7 1/4" ACE Entry Skeleton Stock which uses CAR length buffer and spring. What are the specs for the spring, tube, and buffer and which stock will work with the buffer and spring from the Bushmaster M4A3 Carbine Post Ban? Thank you for your help.http://www.bushmaster.com/faqs/?f=2413Mon, 19 Apr 2010 00:00:00 GMTFAQ # 2405 : good day! what is the original or authentic lower receiver logo and markings of your e2s rifle? so as to compare with imitation or fake bushmasters in the market. thanks for the help!http://www.bushmaster.com/faqs/?f=2405Thu, 15 Apr 2010 00:00:00 GMTFAQ # 2400 : I think I need a new hammer spring for my two stage comp. trigger. Is it the same spring as single stage spring? Are there any other springs that are differant then single stage trigger? where can I get the .035 allen wrench, as I bought this rifle back in 1999, and if it did come with one I no longer can find it.http://www.bushmaster.com/faqs/?f=2400Wed, 14 Apr 2010 00:00:00 GMTFAQ # 2391 : I just ordered a 6.8 upper and plan to use it on my M4 Type Patrolman Carbine. I am considering going ahead with ordering a lower unit and noticed there is a choice for 6.8mm. What is the differance and will the 6.9 upper fit my Patrolman 5.56 Lower? (See below from your catalog) Thanks Rod Lower w/Telestock . . . . . . . . . . . . . . . . . . .(A LOW TELEP) $370.00 Available for 6.8mm SPC Caliber . . . . . (A LOW TELEP-68) $370.00http://www.bushmaster.com/faqs/?f=2391Sat, 10 Apr 2010 00:00:00 GMTFAQ # 2363 : I'm replacing the trigger and need to know how to get the safety out of the way in order to remove the old trigger. Would appreciate any help with this. Thanks, Jerryhttp://www.bushmaster.com/faqs/?f=2363Thu, 01 Apr 2010 00:00:00 GMTFAQ # 2348 : will the 22 lower receivers work with the 223 upper rereivers http://www.bushmaster.com/faqs/?f=2348Thu, 25 Mar 2010 00:00:00 GMTFAQ # 2284 : Some time ago I purchased an xm15-E2S Lower Reciever (Serial# L190522) and have never built the unit into a working fiearm. Can I build a pistol from this unit? http://www.bushmaster.com/faqs/?f=2284Mon, 01 Mar 2010 00:00:00 GMTFAQ # 2244 : How do you turn the safety on, on a 9mm 380 http://www.bushmaster.com/faqs/?f=2244Tue, 16 Feb 2010 00:00:00 GMTFAQ # 2243 : Bushmaster Field Repair Kit AR-15 - Can the parts in this kit be used in a Remington R15 and do you have a gas block that you would recommend for the R15? Thank youhttp://www.bushmaster.com/faqs/?f=2243Tue, 16 Feb 2010 00:00:00 GMTFAQ # 2217 : Can I put a 7.62 X 39 upper on a 5.56 lower? Are any modifications needed?http://www.bushmaster.com/faqs/?f=2217Sat, 06 Feb 2010 00:00:00 GMTFAQ # 2215 : Are your lowers compatible with other manufactures uppers say like rock river or dpms.http://www.bushmaster.com/faqs/?f=2215Fri, 05 Feb 2010 00:00:00 GMTFAQ # 2203 : Can the lower receiver of the Carbon 21s accept other types of Bushmaster upper receiver assemblies?http://www.bushmaster.com/faqs/?f=2203Sun, 31 Jan 2010 00:00:00 GMTFAQ # 2170 : Is there a tool to remove ext nut.I am looking to put a single point sling on my m4http://www.bushmaster.com/faqs/?f=2170Thu, 21 Jan 2010 00:00:00 GMTFAQ # 2163 : Will your .450 Bushmaster upper assembly fit on to my DPMS lower assembly.http://www.bushmaster.com/faqs/?f=2163Wed, 20 Jan 2010 00:00:00 GMTFAQ # 2135 : You guys use to have a "Buikd-Your-AR-15" on the site, but now I don't see it? Can I still order components, but you piece together as a complete rifle, to send to my FFL here in Memphis? I wanted to do something real custom. Thank you. Also, you have some full-auto Class3 weapons on the site, can they be sold to individuals from your manufacture? As a civillian puchaser vs. a L.E. purchase. While although I will be a Law Enforcement very soon I wanted to own the gun, vs. my Dept./Agency I am going to be involved with. Thanks for your reply.http://www.bushmaster.com/faqs/?f=2135Thu, 07 Jan 2010 00:00:00 GMTFAQ # 2129 : A few years ago i put together an AR using only Bushmaster supplied parts. I'm changing out the telestock with another unit and wanted to know the diameter of the telestock tube that i purchased from you guys. Is it the civilian size or the smaller military one?http://www.bushmaster.com/faqs/?f=2129Mon, 04 Jan 2010 00:00:00 GMTFAQ # 2126 : I have recently puchased a AZC15M4PRE Carbon-15. I have 2 questions. 1) Will any Bushmaster upper receiver fit the Carbon 15 lower receiver in order to change calibers, barrell length, or go to gas piston system? 2) Would the carbine length buffer spring of the 6 position stock need to be changed for firearm to function properly with a 20 inch barrell, different caliber, or gas piston system?http://www.bushmaster.com/faqs/?f=2126Sun, 03 Jan 2010 00:00:00 GMTFAQ # 2120 : how can i remove the collapsible stock to my bushmaster when the stock came fixed and can not be adjusted (New Jersey spec.). I need to shorten the collapsible stock.http://www.bushmaster.com/faqs/?f=2120Sat, 02 Jan 2010 00:00:00 GMTFAQ # 2118 : Is it possible to lower trigger pressure & trigger travel, in this case, an XM15-E2S, ser# L129992, and/or is advised or not? Getting conflicting stories locally. Thanks & great gun!http://www.bushmaster.com/faqs/?f=2118Wed, 30 Dec 2009 00:00:00 GMTFAQ # 2103 : I have a Carbon 15 M4 that is showing a ring of wear around the recoil spring buffer. It looks as though the dents are coming from the buffer striking the buffer retainer pin. Is this wear normal or does it mean that the buffer retainer pin is positioned too far to the rear? Thankshttp://www.bushmaster.com/faqs/?f=2103Thu, 24 Dec 2009 00:00:00 GMTFAQ # 2078 : RE: eliminate full auto capablity - My PD just received 8 first generation M16 rifles from the military. We want to eliminate the full auto capability. What parts are required? Do I need to replace the entire fire control, or just the safety selector? Is there a block for the auto sear pin hole? Thank you.http://www.bushmaster.com/faqs/?f=2078Thu, 10 Dec 2009 00:00:00 GMTFAQ # 2055 : Is there a prescribed torque weight when tightening the receiver extensiion nut? Thank youhttp://www.bushmaster.com/faqs/?f=2055Wed, 02 Dec 2009 00:00:00 GMTFAQ # 2046 : Do you sell just the shell for the fiberite stock? I do not need the tube, buffer or spring.http://www.bushmaster.com/faqs/?f=2046Sat, 28 Nov 2009 00:00:00 GMTFAQ # 1972 : We have 30 of your rifles in service (Patrolman's Carbine) one unit is hard to separate or close. The bolt carrier is leaving scratches on buffer face. If I swap bolt carriers the problem goes away.What should I do.http://www.bushmaster.com/faqs/?f=1972Mon, 02 Nov 2009 00:00:00 GMTFAQ # 1963 : what size allen key is the pistol grip screw?http://www.bushmaster.com/faqs/?f=1963Fri, 30 Oct 2009 00:00:00 GMT