▁which ▁provides ▁the ▁pivot ▁for ▁the ▁weapon . ▁It ▁can ▁be ▁elev ated ▁from ▁− 8 9 ▁mil s ▁( − 5 ▁degrees ) ▁to ▁a ▁maximum ▁of ▁ 1 , 3 3 3 ▁mil s ▁( 7 5 ▁degrees ). ▁The ▁pan or am ic ▁teles cope ▁has ▁a ▁four ▁power , ▁fixed ▁focus ▁optical ▁system , ▁with ▁ 1 7 8 ▁mil s ▁field ▁of ▁view . ▁It ▁contains ▁dry ▁nit ro gen ▁gas ▁to ▁ret ard ▁fog ging ▁and ▁cond ens ation . ▁The ▁par alla x ▁shield ▁used ▁during ▁b ores ight ing ▁protect s ▁the ▁l ens . ▁ ▁The ▁tra ils ▁are ▁made ▁of ▁al umin um ▁al loy . ▁They ▁are ▁a ▁single ▁box ▁trail ▁in ▁wish bone ▁shape , ▁and ▁serve ▁three ▁purposes : ▁mob ility ; ▁stability ; ▁and ▁st ow age ▁of ▁section ▁equipment . ▁The ▁lun ette ▁is ▁the ▁to wing ▁pint le ▁that ▁allows ▁the ▁weapon ▁to ▁be ▁connected ▁to ▁the ▁vehicle . ▁When ▁to wing , ▁vehicle ▁has ▁a ▁fixed ▁or ▁seized ▁to w ▁pint le ; ▁remove ▁the ▁lock ▁plate ▁located ▁under ▁the ▁lun ette . ▁The ▁draw bar ▁has ▁two ▁positions : ▁lower ed ▁for ▁travel ▁and ▁raised ▁for ▁firing . ▁There ▁are ▁two ▁lif ting ▁brackets ▁to ▁connect ▁sl ings ▁to ▁when ▁the ▁how itzer ▁is ▁being ▁lifted ▁by ▁hel ic opter . ▁A ▁third ▁bra cket ▁is ▁located ▁on ▁front ▁y oke . ▁The ▁carriage ▁handles ▁are ▁used ▁by ▁crew ▁members ▁to ▁lif ting ▁and ▁sh